PIROCTONE ETHANOLAMINE

CAS Number: 68890-66-4 (piroctone ethanolamine / Piroctone Olamine, 1:1 salt).
EC Number: 272-574-2.
Molecular Formula: C16H30N2O3, equivalently represented as C14H23NO2 · C2H7NO.
Molecular Weight: Approximately 298.42–298.43 g/mol for the defined 1:1 salt.
INCI Name: Piroctone Olamine.
E Number / INS Number: Not applicable; no established food-additive designation for this ingredient.
Boiling Point: Decomposes before a normal boiling point; one publicly reported evaluation records decomposition above approximately 235 °C, rather than a conventional atmospheric boiling point.
Melting Point: Approximately 132 °C in a substance assessment; a specific high-purity laboratory grade specifies 134–138 °C. Grade and test method matter.
Viscosity: Not applicable to the solid material as a neat-liquid viscosity; viscosity of a formulated solution or dispersion depends on its complete composition and temperature.
Density: A substance assessment reports density / specific gravity of about 1.1 at 21.5 °C; this is not a powder bulk-density specification.

Identity clarification: Piroctone, the free hydroxypyridone component, is separately identified as CAS 50650-76-5 and must not be confused with the ethanolamine salt CAS 68890-66-4. Octopirox and related trade-style names appear in technical literature, but purchasing documents should use the correct ingredient identity and the actual offered grade.

COMMON PRODUCT AND CHEMICAL NAMES

Piroctone ethanolamine
Piroctone olamine
Piroctone ethanolamine salt
Piroctone monoethanolamine salt
Piroctone Olamine (INCI designation)
Octopirox (established trade designation)
Octopyrox (recorded spelling variant)
1-Hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone monoethanolamine salt
2(1H)-Pyridinone, 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-, compound with 2-aminoethanol (1:1)

The free compound piroctone is not an exact synonym for the salt, and ciclopirox olamine is a different antifungal molecule. Product labels, regulatory records and safety documents should not merge these chemically distinct identities.

WHAT IS PIROCTONE ETHANOLAMINE?

Piroctone ethanolamine is an organic salt formed by the association of the antifungal hydroxypyridone piroctone and monoethanolamine, also called 2-aminoethanol or olamine in this naming context. It is primarily encountered in personal-care ingredients and the scientific literature as Piroctone Olamine. Its CAS number, molecular formula and chemical identity relate to the defined salt rather than to an arbitrary mixture of piroctone and free ethanolamine.

Piroctone Ethanolamine is typically a solid at room temperature. Technical descriptions characterize it as white, almost white or slightly yellow and crystalline, with exact color, assay, impurities and particle characteristics dependent on the commercial grade. A powdered raw material can look uniform but still differ materially from another batch in its assay, residual components, dissolution behavior and storage history. Appearance should be treated as an initial quality check, not proof of specification compliance.

The best-established consumer application of Piroctone Ethanolamine is the management of visible dandruff through shampoos and related scalp products. Dandruff is multifactorial: scalp microbial communities, sebum and lipid metabolism, barrier responses, irritation and individual susceptibility all contribute. The presence of an antifungal ingredient is relevant because Malassezia yeasts are associated with dandruff in many subjects, but a finished formula's results cannot be predicted from the ingredient name alone.

Piroctone Olamine also has a recognized place in European cosmetic-preservative legislation. That legal listing does not mean a concentrate can be applied directly to skin or that every finished formula is adequately preserved with this one substance. Cosmetic preservation requires finished-formula microbiological assessment, whereas anti-dandruff efficacy requires a different set of performance and claims substantiation studies.

Piroctone Ethanolamine should not be presented as an approved pharmaceutical treatment merely because scientific articles describe antifungal activity. Whether a finished formulation is classified as a cosmetic, drug, medicinal product or another category depends on jurisdiction, concentration, presentation, claims and applicable law. A supplier's raw-material description cannot establish approval for a specific marketed product.

CAS NUMBER, EC / EINECS NUMBER AND CHEMICAL IDENTIFICATION

Product Name: Piroctone Ethanolamine.
Principal Cosmetic Name: Piroctone Olamine.
CAS Number of Salt: 68890-66-4.
EC / EINECS Number: 272-574-2.
CAS Number of Distinct Free Piroctone: 50650-76-5.
Molecular Formula of Salt: C16H30N2O3.
Alternative Formula Notation: C14H23NO2 · C2H7NO.
Molecular Mass: Approximately 298.43 g/mol.
Chemical Class: Substituted hydroxypyridone antifungal compound, supplied as a 1:1 monoethanolamine salt.
Typical Commercial Form: White to off-white or slightly yellow solid / crystalline powder.
Cosmetic Ingredient Declaration: Piroctone Olamine, subject to the relevant naming and labeling law.

The shared molecular formula can be written as a sum of the two salt components. This convention helps explain why descriptions sometimes show two dot-separated formulas and sometimes one empirical formula. The two notations are not evidence of different commercial chemicals: they are representations of the same overall composition when the chemical has the stated 1:1 salt identity.

The countercomponent is ethanolamine, not ethylene glycol, and the name should not be confused with ethanolamine used as a free alkalizing agent in cosmetic formulations. A purchase of Piroctone Olamine does not constitute a purchase of unconstrained mixtures containing separate piroctone and ethanolamine. Identity testing should confirm the actual salt rather than relying only on the amount of nitrogen or on a generic hydroxypyridone response.

In regulatory and quality documentation, the salt identity should be explicit. Some legal entries discuss both 1-hydroxy-4-methyl-6-(2,4,4-trimethylpentyl)-2-pyridone and its monoethanolamine salt, and their CAS numbers appear together within that legal entry. For procurement of Piroctone Ethanolamine specifically, CAS 68890-66-4 is the appropriate identifier.

CHEMICAL STRUCTURE AND MOLECULAR CHARACTERISTICS

The piroctone portion contains a 2-pyridone / hydroxypyridone system and an alkyl side chain with a branched hydrocarbon structure. The nitrogen- and oxygen-containing heterocyclic region participates in the chemical interactions associated with the ingredient's antifungal activity, while the substantial nonpolar side chain contributes to its affinity for less polar environments. The molecule therefore does not behave like a simple highly water-soluble inorganic salt.

The hydroxypyridone functionality is important for metal-ion coordination. Studies of the antifungal chemistry describe complexes with ferric iron, and the ability to interact with essential metal ions is one proposed route by which piroctone-related species may perturb fungal physiology. The exact relationship between extracellular metal binding, intracellular iron availability, membrane behavior and microorganism response depends on the test conditions. It is inaccurate to assume that all metal-ion interactions automatically increase antifungal performance.

The 1:1 association with monoethanolamine is a distinguishing structural feature. It contributes to the commercial salt identity and influences dissolution and distribution relative to the free hydroxypyridone, but does not eliminate the important role of pH or formulation composition. A salt may still have modest solubility in a given water phase, particularly if its organic component is relatively hydrophobic.

The structural formula is typically shown with a piroctone organic moiety and an aminoalcohol countercomponent. In solution, the distribution of molecular forms can change with pH, solvent environment and ion pairing. Consequently, a manufacturer's performance assessment must consider actual matrix conditions rather than assuming the solid-state representation persists as an unchanged species under every use condition.

Piroctone Olamine is not a classical cleansing surfactant and is not added primarily to create foam. It also is not a zinc pyrithione salt, although the two materials have both been used in anti-dandruff contexts. Chemical identity is essential when comparing ingredients because different molecular structures lead to different analytical methods, regulatory limitations and compatibility concerns.

PHYSICAL AND CHEMICAL PROPERTIES

Physical State at 20–25 °C: Solid.
Appearance: White to slightly yellow crystalline powder; high-purity laboratory specifications may require white to almost white powder or crystals.
Odor: No universal quantified odor specification established for all commercial grades.
Molecular Weight: 298.42–298.43 g/mol.
Melting Point: Approximately 132 °C in a publicly available chemical assessment; 134–138 °C is the specification of one high-purity laboratory grade.
Boiling Point: Conventional boiling point not established; decomposition is reported above approximately 235 °C in an assessment based on earlier substance data.
Density / Specific Gravity: Approximately 1.1 at 21.5 °C in a reported substance-data summary; not the loose or tapped bulk density of the powder.
Dynamic Viscosity: Not applicable to the neat solid; no grade-independent measured neat-liquid value.
Vapor Pressure: Reported approximately 0.00017 Pa at 20 °C and 0.00048 Pa at 25 °C in a chemical assessment; very low volatility under ordinary handling conditions.
Water Solubility, pH 4 and 20 °C: Reported approximately 22.1 mg/L.
Water Solubility, pH 7 and 20 °C: Reported approximately 29.8 mg/L.
Water Solubility, pH 9 and 20 °C: Reported approximately 473 mg/L.
Water Solubility, pH 4 and 10/30 °C: Approximately 19 / 26.1 mg/L in the same reported dataset.
Water Solubility, pH 7 and 10/30 °C: Approximately 25.1 / 37.1 mg/L in the same reported dataset.
Water Solubility, pH 9 and 10/30 °C: Approximately 475 / 475 mg/L in the same reported dataset.
Reported Acid Dissociation Constant: pKa approximately 5.9 at 20 °C; interpret for the measured substance and reported method.
Reported Octanol/Water Partition Coefficient: log Kow approximately 3.86 at 20 °C in the assessed dataset.
Solubility in Selected Organic Media: Soluble in methanol according to a high-purity reagent specification; quantities in other solvents are solvent- and grade-dependent and require confirmation.
Flash Point: Not reliably established for the supplied generic solid material; do not substitute a flash point of a solvent-based ingredient preparation.
Bulk Density: Not reliably established for generic Piroctone Ethanolamine powder; packaging and powder behavior are particle-dependent.
Particle Size / Distribution: Grade dependent; obtain supplier specification when dispensing, mixing and powder flow matter.
Assay: Grade dependent; a high-purity laboratory product specifies at least 97.0% by nonaqueous titration and by HPLC area%, but that is not a universal industrial or cosmetic-grade specification.
Shelf Life: Manufacturer, grade, packaging and storage condition dependent; request the supported retest date or shelf-life statement for the specific supplied batch.

The water-solubility numbers above are reported measurements in specified buffered environments. The large difference between the values at pH 7 and pH 9 demonstrates why a single unsourced claim that the ingredient is simply 'water soluble' can be misleading. These values are not a validated recipe for dissolving a target percentage in an actual shampoo; surfactants, solvent blends, salts, temperature and equilibration conditions can change practical incorporation behavior.

Conversely, a statement that the material is completely insoluble in water is also too absolute. It has a finite measured solubility, and the experimental result depends strongly on the medium. In a final product, an acceptable appearance may result from true molecular dissolution, micellar solubilization or a controlled dispersion. Those mechanisms are different and can have different long-term stability and deposition behavior.

A laboratory reagent's assay specification should never be copied verbatim as the guaranteed assay of all commercial cosmetic grades. A particular offer requires its own technical data sheet and lot-specific certificate of analysis. The same applies to melting-point ranges, residual ethanolamine and impurity limits.

HOW DOES PIROCTONE ETHANOLAMINE WORK AT THE MOLECULAR LEVEL?

Piroctone Olamine is associated with suppression of susceptible fungi, notably organisms within the genus Malassezia that are relevant to scalp flaking. The active hydroxypyridone structure has been linked to interference with fungal metal-ion homeostasis, including interactions involving iron. Earlier mechanistic discussions often describe coordination of ferric ions and disruption of processes required for normal cellular metabolism. This is a biologically plausible and experimentally investigated mechanism, but not a complete universally established sequence for every fungus and every formulation.

More recent research has expanded the picture. Laboratory work on selected combinations of Piroctone Olamine with sorbitan caprylate reported effects involving fungal membrane integrity, biofilm formation and changes in ergosterol-related biology against Malassezia restricta. The study concerns particular combinations and experimental conditions, not proof that the same effects will occur at the same concentrations in every commercial shampoo or in monotherapy.

Formulation availability is central to performance. Even a biologically active molecule cannot influence scalp organisms effectively if it precipitates irreversibly, is removed too rapidly from the target area or becomes insufficiently available in the relevant phase. Conversely, solubilizing it completely is not by itself a guarantee of good scalp delivery: deposition, partitioning, rinse-off behavior and interaction with formulation ingredients also matter.

The ingredient can alter an ecosystem rather than simply acting as a direct 'sterilizer'. In a reported scalp-microbiome study, a shampoo containing 0.5% Piroctone Olamine was evaluated in subjects with dandruff over three weeks; the treated group showed changes in the relative abundance of several microorganisms, including decreases in Malassezia species, alongside improvements in visible adherent flakes. These findings support an association between the formula's performance and microbiome changes, but they do not establish that all dandruff has one microbiological cause.

A further scientific issue is speciation and metal binding. The hydroxypyridone site can bind ferric ions, and metal-rich conditions can influence the chemical species present. This introduces a formulation consideration: trace metals, complexing agents and product-processing materials should be evaluated when they might affect active availability or long-term appearance. Not every multivalent metal-containing ingredient necessarily causes failure, but compatibility requires evidence rather than a blanket assumption.

Piroctone Olamine should therefore be understood as a formulation-dependent antifungal ingredient with an established cosmetic role. Claims about permanent microbiome correction, treatment of all scalp diseases, complete eradication of Malassezia or universal hair-regrowth effects are not substantiated by the fact that the ingredient inhibits fungi in a laboratory experiment.

WHICH INDUSTRIES USE PIROCTONE ETHANOLAMINE?

The primary industry is cosmetics and personal care, especially hair and scalp products. Examples include anti-dandruff rinse-off shampoos and selected leave-on scalp treatments, provided the ingredient is permitted for the specific category and jurisdiction. The same chemical identity appears in cosmetic-preservative regulations, although practical preservation and product-category compliance are separate issues.

In hair care, it may be evaluated in products emphasizing visible-flake control, scalp comfort and cleansing performance. In related personal-care development it may be considered where an antifungal or preservative function is appropriate and legally allowed. Such applications must be designed against the actual target and tested for compatibility, irritation and microbiological outcome.

Another activity is laboratory research: microbiology laboratories investigate activity against Malassezia and other susceptible organisms, while formulation scientists study delivery from solvent and surfactant systems. The compound has also been used as a reference material in analytical testing and research on scalp ecology. These are research uses and should not be represented as established end-use approvals in every market.

Broader dermatological discussion occurs in the scientific literature, but scientific interest is not the same as an authorization to market an over-the-counter treatment or a prescription product. Piroctone Olamine should not be assigned food, agricultural, feed, disinfectant or medical-device uses without specific authorization and grade-specific evidence.

PIROCTONE ETHANOLAMINE IN ANTI-DANDRUFF SHAMPOOS

Anti-dandruff shampoo is the most important commercial application of Piroctone Ethanolamine. The purpose is to combine removal of scales and soil with adequate antifungal action on the scalp while maintaining a pleasant cleansing experience. Effective products must also be stable during manufacturing, storage, dispensing, dilution and rinsing.

A rinse-off surfactant formulation introduces several constraints. The ingredient may interact differently with anionic, amphoteric and nonionic surfactant assemblies, and the micellar environment can change apparent solubility. Product pH affects the dissolved species and may influence preservation, color and physical stability. Fragrance, conditioning polymers, salt and other additives can also change formulation behavior.

A meaningful development plan distinguishes three related but different outcomes. First, the active must be present in the intended quantity and chemical form throughout shelf life. Second, the formula should deliver active material to the scalp during ordinary consumer washing and rinsing. Third, the final product should demonstrate the claimed visible-flake or related performance under appropriate testing. Passing one of these checks is not sufficient to establish the others.

Commercial product performance also depends on usage patterns and baseline scalp condition. A formula that works well in a controlled study may produce different results under less frequent use, when combined with other scalp products or when irritation is triggered by fragrances or surfactants. Accordingly, claims should reflect the finished-product evidence and not an extrapolation from a raw-material brochure.

A published scalp-microbiome investigation tested a shampoo containing 0.5% Piroctone Olamine during a three-week treatment period. It reported reductions in relative abundance of Malassezia species and improvement in dandruff-associated flaking scores. This study is relevant proof of scientific investigation but does not set a universal optimum concentration or establish medical treatment efficacy for every formula.

Some users need solutions addressing dry scale, product buildup or scalp sensitivity rather than a single antimicrobial target. An appropriately formulated anti-dandruff shampoo may combine gentle cleansing and ingredient compatibility to avoid undermining the benefit of the active. Treating Piroctone Olamine as a substitute for responsible surfactant selection or finished-product dermatological assessment would therefore be a technical mistake.

LEAVE-ON SCALP CARE, CONDITIONERS AND RELATED FORMATS

Selected leave-on scalp formats can be considered where the ingredient's function, concentration and product presentation conform to local cosmetic requirements. Leave-on exposure differs from shampoo exposure because the material remains in contact with skin for longer periods and potentially accumulates through repeated use. The regulatory category, safety assessment and tolerance testing should therefore be evaluated independently of rinse-off shampoo data.

Conditioning systems are chemically diverse. Cationic polymers, fatty alcohol structures, emulsions and solubilizing systems may affect Piroctone Olamine's availability and product appearance. Transparent scalp tonics and milky conditioners can require entirely different incorporation approaches. No ingredient-level rule guarantees that the same addition method or concentration is suitable for both.

Products presented as anti-itch, anti-flake or scalp-comfort cosmetics require careful claims substantiation. Scalp itching can have several causes, including irritation and dermatological conditions requiring assessment by a healthcare professional. A cosmetic ingredient should not be portrayed as a universal treatment for fungal infection, psoriasis, seborrheic dermatitis or alopecia unless the specific marketed product has an appropriate legal status and evidence base.

The supply chain should also account for packaging contact and long-term storage. A visually homogeneous leave-on serum immediately after manufacture may develop haze, crystalline particles or color changes later, particularly after cold storage or thermal cycling. Product-development studies should capture such changes before marketing, not just during the initial laboratory batch.

PIROCTONE OLAMINE AS A COSMETIC PRESERVATIVE

Piroctone Olamine is included in Annex V, entry 35, of Regulation (EC) No 1223/2009, the European Union list of preservatives allowed in cosmetic products. The listed maximum concentration is 1.0% in rinse-off products and 0.5% in other products for the preservative entry. These are legal concentration limits associated with the defined entry, not recommended universal starting doses or a guarantee of antifungal performance.

The term preservative refers to protection of the formulated cosmetic from microorganisms during storage and use. An anti-dandruff ingredient, in contrast, is selected primarily to act at the scalp surface during use. The same substance can appear in both conversations, but the scientific evidence needed to prove product preservation is different from the evidence needed to substantiate anti-dandruff claims.

Finished-product preservation should be judged in the complete formulation, with suitable microbial challenge testing and other safety checks where required. Surfactants, water activity, packaging geometry, contamination during use, pH and the presence of other preservatives can alter the outcome. The fact that Piroctone Olamine is listed as an allowed preservative does not make every formula containing it adequately protected.

Regulatory interpretation for a non-preservative use at a concentration different from a preservative limit can be more complicated than simply looking up the Annex V line. Historic scientific-committee documentation addressed use for other purposes and requested additional safety substantiation for elevated leave-on concentrations. Buyers and formulators should review the current consolidated legislation, relevant restrictions and the product claims with a qualified regulatory specialist before assuming a higher use level is acceptable.

The limits cited here apply to the European Union framework and should not be presented as worldwide permission. Requirements in Türkiye, the United Kingdom, the United States and other markets may differ in their legal structure and in the line between cosmetic and medicinal claims. Compliance should be checked in each sales territory for the final ready-to-use product.

PIROCTONE ETHANOLAMINE IN SCALP MICROBIOME RESEARCH

Research on the scalp microbiome provides a useful explanation for why a selective antifungal ingredient may have visible effects beyond simply removing scales during cleansing. The scalp hosts a community of yeasts and bacteria whose relative abundances, metabolites and interactions with sebum may differ between subjects with and without dandruff. Malassezia restricta is one organism frequently studied in this context, although observed associations vary by population and sampling method.

In a published clinical-microbiome study, researchers investigated samples from individuals with and without dandruff and compared microbiomes before and after shampoo use. Among dandruff sufferers using a 0.5% Piroctone Olamine shampoo, the reported relative abundance of Malassezia species and certain bacterial taxa declined while another bacterial taxon increased. The treated scalp profiles became more similar to the profiles associated with no-dandruff conditions, and some functional genes linked to lipase and oxidative-stress pathways also changed.

These are observations from a specific research program, not proof that the active permanently 'restores' a microbiome or that every consumer will experience the same changes. Microbiome sequencing also measures relative organism patterns and genetic pathways, not necessarily absolute numbers of viable organisms or a direct biochemical cause. Marketing interpretations should respect these limitations.

Other in-vitro studies have compared Piroctone Olamine with climbazole, ketoconazole-containing reference products or combinations involving different ingredients. Results vary by Malassezia species and experimental system. Such work can guide screening, but an agar inhibition zone or minimum inhibitory concentration does not translate mechanically into equivalent efficacy in real consumer-use conditions.

FORMULATION CHEMISTRY: SOLUBILITY, pH AND SOLVENT SELECTION

A major technical limitation is the modest intrinsic water solubility reported under certain pH conditions. Substance data at 20 °C gave approximately 22.1 mg/L in a pH 4 medium and 29.8 mg/L in a pH 7 medium, whereas a pH 9 medium gave approximately 473 mg/L. The strong medium dependence means the water phase's nominal pH is a useful variable, but it is not the only one that determines usable active concentration in a real shampoo.

Common cosmetic products contain surfactants and other solubilizing constituents that can accommodate molecules differently than plain buffer solutions. The resulting solubilization may take place within micelles or other organized phases. A product that appears clear may nevertheless show crystallization after dilution, temperature cycling or changes in ionic strength, so an immediate visual check is not an adequate solubility study.

Some solvent systems are investigated to support incorporation and skin or scalp delivery. A 2024 study specifically examined delivery of Piroctone Olamine from single and mixed solvent systems, illustrating why solvent choice can affect exposure and disposition. It would be inappropriate to turn that research observation into a universal recipe or to assume that maximally dissolving the ingredient always produces the best product performance.

The formulator should measure pH both immediately after production and during stability testing, using a method appropriate to the product. If the product is a concentrated surfactant mixture or an emulsion, sampling and dilution procedures can affect measured pH; consistently documented methods improve comparability. Any adjustment of pH should be evaluated alongside overall skin tolerance, preservative performance, viscosity and compatibility.

Solvents, co-solvents and hydrotropes must be assessed for their own allowable uses and effects on product feel. Ethanol, glycols and other solvent systems differ in volatility, safety, labeling, cost and material compatibility, and no solvent should be chosen simply because it appears in a generic ingredient profile. A supplier formulation guide and in-house experiments are necessary before committing to a manufacturing method.

FORMULATION COMPATIBILITY WITH SURFACTANTS, POLYMERS AND METALS

Compatibility is more nuanced than a simple yes-or-no statement. Anionic, nonionic and amphoteric cleansing agents can influence the distribution of an organic antifungal salt between aqueous, micellar and deposited phases. Their effect on cloud point, foam, mildness and rheology may change as other formula components are adjusted. Compatibility with one surfactant grade does not guarantee compatibility with all related products.

Conditioning polymers can affect deposition and complex formation, especially in shampoos that form polymer-surfactant coacervates during dilution. Such deposition mechanisms are formulation-specific and need experimental demonstration for the particular active. The chemical presence of a cationic polymer alone does not establish that Piroctone Olamine is deposited efficiently on the scalp.

The molecule's hydroxypyridone region is capable of metal binding, and laboratory findings point to potentially important interactions with ferric ions. Trace metal contamination, metal salts, chelating agents and process equipment may therefore deserve attention in stability development. However, broad claims that all metals deactivate this compound or that adding a chelating agent necessarily improves efficacy are not justified without formulation-specific data.

Fragrances, botanical extracts, dyes and opacifiers can also affect stability. The correct development approach is to track color, odor, homogeneity, precipitation and assay under relevant storage conditions. Where a formula contains multiple potential antimicrobials, investigate both combined performance and mutual compatibility rather than assuming a mixture must be synergistic.

INDUSTRIAL APPLICATIONS AND PERFORMANCE EVALUATION

The principal industrial activity surrounding Piroctone Ethanolamine is manufacturing cosmetic raw materials and finished personal-care formulations. Important performance questions include consistency of active concentration, manufacturing ease, physical stability, microbiological activity, compatibility with packaging and regulatory suitability. The benefit from the ingredient is therefore realized through a validated finished product, not through an isolated laboratory property alone.

In an anti-dandruff shampoo development program, useful performance indicators include product appearance, pH, rheology, active assay, anti-fungal screening, in-use flake scores and user tolerance. Scalp flake improvement should be assessed separately from hair shine, cleansing power or fragrance preference, as those endpoints describe different aspects of consumer experience. A favorable outcome for one endpoint is not evidence for unrelated effects.

Ingredient manufacturers may use chromatographic assay to monitor material purity, while finished-product laboratories need a validated method capable of recovering and quantifying Piroctone Olamine from the complete matrix. This can be more difficult than measuring the pure powder because surfactants, fragrance and other ingredients may interfere with extraction or detection. Accuracy and recovery should be checked in representative formulas.

For international distribution, packaging and batch documentation should establish traceability. The procurement description should identify whether the supplied material is a neat crystalline powder or a prepared blend or solution, because concentration, handling hazards, physical properties and customs documents can differ substantially. Generic statements about 'cosmetic grade' are not a substitute for written specifications.

WHAT PROBLEMS CAN PIROCTONE ETHANOLAMINE HELP ADDRESS?

In an appropriately designed anti-dandruff formula, Piroctone Ethanolamine can help address visible scalp flaking associated with susceptible microbial populations. It may help designers create formulations in which fungal suppression and ordinary cleansing work together. The scope of the benefit depends on the user's condition, ingredient delivery, formula, frequency of use and evidence supporting the particular finished product.

For ingredient developers, the material can provide an alternative chemical identity to other anti-dandruff actives, which may be useful when regulatory access, aesthetics or compatibility differs. That alternative is not automatically simpler or safer: its limited solubility and potential hazards in concentrated form must be considered. Some applications require a dedicated solubilization and stability program before acceptable product quality is obtained.

As a cosmetic preservative, it can potentially contribute to control of susceptible microorganisms in a finished formula where permitted. However, preservation failure may involve organisms or product-use conditions not adequately addressed by a single ingredient. Only finished-product validation can show whether the proposed preservative strategy meets the required microbiological standard.

Piroctone Ethanolamine does not solve every scalp complaint. Scaling caused by psoriasis, contact dermatitis or unrelated medical conditions may require professional assessment, and hair loss should not be attributed automatically to dandruff. A product containing Piroctone Olamine should not be represented as a cure for hair loss or an alternative to diagnosis and treatment when symptoms are persistent, severe or accompanied by lesions.

IMPORTANT CONSIDERATIONS WHEN USING PIROCTONE ETHANOLAMINE

Start with a correct material identity and defined grade. This is especially important because an ingredient with the word 'olamine' can be confused with other antifungal salts and because Piroctone Olamine is sometimes labeled using historical or commercial names. Confirm the full CAS number and the relevant supplier documentation before evaluating an offer.

The ingredient's low solubility under some aqueous conditions makes phase behavior important. Excessive or inappropriate loading can produce haze, sediment, crystals or unequal distribution in the finished product. Accurate assay and defined sampling procedures are especially valuable when evaluating concentrated or heterogeneous formulations.

An apparently clear formula can lose clarity after cold exposure, dilution or changes in surfactant concentration. Conversely, an intentionally opaque formula may be stable and effective if validated. The formulation design objective should therefore be chosen explicitly: clarity, homogeneity, deposition, consumer feel and proven activity are not interchangeable outcomes.

Packaging, storage and manufacturing conditions should be tested. A powder may be sensitive to humidity, caking and dust handling, while dissolved formulations may show compatibility issues with closures, pumps or other ingredients. Do not promise a specific shelf life or temperature range for all grades when the available supporting document describes only a particular laboratory reagent.

Concentrated Piroctone Olamine can be hazardous to eyes and irritating to skin according to an available supplier SDS. This workplace classification must be distinguished from the safety of a correctly formulated finished cosmetic at a legally permitted concentration. Neither workplace precautions nor finished-product risk assessment can be omitted just because the substance is familiar from shampoo ingredient lists.

STARTING FORMULATION APPROACHES AND DEVELOPMENT TESTING

A sensible formulation program begins by defining the final product category, target market, intended claims and expected consumer use. These choices establish the legal and technical boundaries before an active material is incorporated. The next steps are to choose an appropriately documented grade, examine the supplier's recommended processing window and conduct small-scale solubility and compatibility experiments.

Rather than using an arbitrary universal dose, the formulation team should establish a trial range supported by the selected supplier grade, local regulation and application data. The EU preservative limits of 1.0% in rinse-off products and 0.5% in other products are ceilings for the Annex V preservative entry, not instructions that those levels are always necessary or always optimal. Studies that tested a particular 0.5% shampoo provide examples of research concentrations, not guaranteed performance conditions for another formula.

A useful comparison evaluates selected candidate bases with and without the ingredient while preserving as many other variables as practicable. Measurements may include active assay, uniformity, product pH, rheology, visual clarity, phase separation, microbial response and scalp-deposition behavior where an appropriate method exists. This design helps establish whether a change in outcome comes from the active or from differences elsewhere in the formula.

Temperature and storage studies should consider the expected distribution and consumer-use conditions. Cold storage, elevated-temperature holding and temperature cycling can reveal delayed precipitation and discoloration that are not visible initially. Representative packaging trials are important because the material may be sold into pump bottles, tubes, jars or other systems with different contamination and compatibility profiles.

A final product should undergo applicable safety and efficacy testing before commercial claims are approved. Anti-dandruff efficacy should be supported by suitable organism studies and, where the claim requires it, clinical or user studies; preservation should be supported by microbiological validation. No generic addition sequence, solvent proportion or guaranteed mixing time can be specified for every Piroctone Olamine formula without an identified supplier method and supporting data.

SIMILAR PRODUCTS AND ALTERNATIVES

Zinc pyrithione is a different metal-containing antifungal ingredient with a different regulatory history, physical form and mechanism. It should not be described as another name for Piroctone Olamine or assumed to have identical current legal access in cosmetic products. Product-category regulations can change independently of the underlying biological activity.

Climbazole is another antifungal cosmetic ingredient discussed in anti-dandruff research. Its use levels, solubility, restrictions and safety assessment differ from those of Piroctone Olamine. Published experiments on particular combinations offer evidence about the tested strains and formula conditions, but they do not justify assuming any arbitrary combination produces a clinically proven synergistic effect.

Ketoconazole is frequently encountered as a comparator in scientific studies and medicinal scalp preparations. It is not a direct drop-in cosmetic substitute for Piroctone Olamine; it can have a different product classification and authorization framework. A study showing comparable in-vitro activity under a defined assay cannot be interpreted as equivalence between finished consumer products.

Ciclopirox olamine deserves special attention because its name is superficially similar. Ciclopirox and piroctone are different active moieties, with different structures and specific regulatory uses. Substituting one for the other without a complete technical and legal assessment is a chemical identification error.

Selenium sulfide and other established anti-dandruff ingredients may be considered in some markets and product categories, subject to legal restrictions. Decisions among candidates should be based on the intended country, claim, formulation aesthetics, manufacturing process, performance studies, user safety and ingredient availability rather than on a simple ranking of claimed antifungal potency.

Preservative alternatives constitute a different comparison group. Ingredients selected to protect a bottle of shampoo against contamination are not necessarily selected to manage scalp flakes, and an active that suppresses Malassezia may not be a sufficient sole preservative for the finished bottle. The preservative system and the anti-dandruff strategy must be evaluated as two related but distinct functions.

INITIAL FORMULATION APPROACHES FOR PIROCTONE ETHANOLAMINE

The following examples illustrate how PIROCTONE ETHANOLAMINE can be evaluated in cosmetic formulation research and product development. PIROCTONE ETHANOLAMINE is widely known by its International Nomenclature of Cosmetic Ingredients (INCI) name, Piroctone Olamine. This ethanolamine salt of piroctone, also identified by CAS number 68890-66-4, is used in scalp-care and anti-dandruff cosmetic systems. Piroctone Olamine is also marketed under certain supplier trade names; a trade name should not be treated as interchangeable with every raw-material grade without checking its specifications.

These examples are preliminary formulation approaches, not validated commercial recipes, manufacturing instructions, finished cosmetic safety assessments, or guarantees of anti-dandruff efficacy. The stated PIROCTONE ETHANOLAMINE concentrations are illustrative starting levels for controlled laboratory screening. Raw-material purity, particle characteristics, solubility, surfactant composition, pH, preservatives, packaging, and contact time can significantly affect the performance of PIROCTONE ETHANOLAMINE. Every application requires laboratory trials, microbiological and physical-stability testing, compatibility studies, safety assessment, and confirmation of the cosmetic or other regulatory requirements that apply in the target market. Permissible concentrations and marketing claims may differ between rinse-off and leave-on products and across jurisdictions.

EXAMPLE 1: PIROCTONE ETHANOLAMINE CONCENTRATION SCREENING IN A CLEAR ANTI-DANDRUFF SHAMPOO

Objective: To determine how PIROCTONE ETHANOLAMINE concentration influences clarity, active-ingredient distribution, viscosity, foam properties, scalp feel, and dandruff-control performance in a rinse-off shampoo formulation.

Starting components:

PIROCTONE ETHANOLAMINE: approximately 0.10%, 0.30%, and 0.50% by total formula weight, assessed as separate laboratory screening levels.

Primary anionic surfactant (for example, sodium laureth sulfate): approximately 8–12% active matter, held constant.

Amphoteric co-surfactant (for example, cocamidopropyl betaine): approximately 2–4% active matter, held constant.

Humectant (for example, glycerin): approximately 1–3%, held constant.

Viscosity modifier (for example, sodium chloride or a compatible polymeric thickener): as required, with the viscosity target kept constant.

Compatible preservative system: as required based on the supplier's use instructions and preservation assessment.

pH-adjusting agent (for example, citric acid solution): as required to reach an illustrative final pH of approximately 5.0–6.0.

Demineralized water: balance to 100% by weight.

The listed PIROCTONE ETHANOLAMINE levels are development starting points and do not establish an optimal or legally permitted concentration for every market. Raw-material supply strength and surfactant active-matter content must be accounted for when calculating a complete formula. Because PIROCTONE ETHANOLAMINE dissolution depends on the formulation medium, clarity must be demonstrated experimentally rather than assumed.

Application approach:

1. Charge demineralized water into a clean, compatible mixing vessel and begin gentle-to-moderate agitation to limit excessive foam.

2. Incorporate the humectant and compatible water-soluble ingredients according to the selected formulation procedure.

3. Add the anionic and amphoteric surfactants gradually, maintaining uniform mixing.

4. Pre-disperse or dissolve PIROCTONE ETHANOLAMINE in a suitable portion of the compatible surfactant phase or an approved solubilizing system, following the raw-material supplier's guidance. Add this portion to the main batch and check for complete incorporation.

5. Introduce the chosen preservative system and viscosity modifier under conditions compatible with the ingredients. Adjust the pH and complete the batch with water.

6. Evaluate the PIROCTONE ETHANOLAMINE shampoo for appearance, transparency, pH, viscosity, foam volume, rinseability, and visible crystallization or precipitation.

7. Conduct controlled comparative laboratory performance assessments and, where appropriate and ethically approved, standardized consumer-use testing for flaking and scalp comfort. Maintain the same washing frequency and exposure conditions across the PIROCTONE ETHANOLAMINE levels.

8. Monitor active-ingredient content and physical stability during storage, then identify the PIROCTONE ETHANOLAMINE level that best balances formulation robustness, user experience, and substantiated performance.

Safety consideration: Review the current safety data sheet and the ingredient's permitted uses for the relevant jurisdiction. Avoid inhalation of PIROCTONE ETHANOLAMINE powder during manufacturing, wear suitable protective equipment, and assess potential eye and skin irritation in the final shampoo. An anti-dandruff efficacy claim requires product-specific supporting evidence; ingredient presence alone is not sufficient. Preservation efficacy must be verified independently.

EXAMPLE 2: PIROCTONE ETHANOLAMINE INCORPORATION SCREENING IN A RINSE-OFF SCALP CONDITIONER

Objective: To examine how PIROCTONE ETHANOLAMINE dosage affects emulsion stability, ingredient homogeneity, hair conditioning, rinseability, and scalp-care performance in a rinse-off conditioner.

Starting components:

PIROCTONE ETHANOLAMINE: approximately 0.10%, 0.20%, and 0.30% by formula weight, evaluated as separate screening levels.

Fatty alcohol structurant (for example, cetearyl alcohol): approximately 3–5%, held constant.

Cationic conditioning ingredient (for example, a suitable behentrimonium chloride grade): a supplier-appropriate level providing approximately 0.3–0.8% cationic active matter, held constant.

Conditioning emollient (for example, a compatible light ester oil): approximately 0.5–2.0%, held constant.

Humectant (for example, glycerin): approximately 1–3%, held constant.

Compatible solubilizing or premixing aid, if required for PIROCTONE ETHANOLAMINE: approximately 1–3%, with grade and level selected through compatibility testing.

Preservative system: as required after the formulation's preservation assessment.

pH-adjusting agent: as required for an illustrative final pH of approximately 4.5–5.5.

Demineralized water: balance to 100% by weight.

Although PIROCTONE ETHANOLAMINE can be used in certain conditioner systems, interactions with cationic ingredients and the emulsion matrix must be tested for each formulation. The proposed levels are comparative laboratory references and must be reconciled into a complete 100% formulation before testing.

Application approach:

1. Prepare the aqueous phase using demineralized water and the selected water-soluble ingredients in a clean, suitable vessel.

2. Prepare the fatty alcohol, conditioning ingredient, and compatible emollient phase according to the established supplier guidance and laboratory process.

3. Form the conditioner emulsion using controlled mixing and temperatures appropriate for the selected raw materials.

4. Prepare a compatible PIROCTONE ETHANOLAMINE premix, if required, and incorporate it at a stage shown by laboratory testing to preserve homogeneity and active-ingredient integrity. Do not assume direct addition of dry PIROCTONE ETHANOLAMINE powder will result in complete dissolution.

5. Cool under controlled conditions, add temperature-sensitive ingredients and the selected preservation system, adjust pH, and complete the batch weight.

6. Measure appearance, pH, viscosity, emulsion uniformity, and any precipitation or separation during storage.

7. Evaluate conditioning properties, wet-combing force, feel, rinsing behavior, and scalp compatibility using standardized hair tresses and relevant laboratory methods.

8. Compare the PIROCTONE ETHANOLAMINE levels and select a candidate for further stability, safety, and efficacy validation rather than assuming the highest loading is automatically preferable.

Safety consideration: Verify ingredient compatibility and the finished product's safety for the intended rinse-off contact conditions. Check the applicable cosmetic concentration restrictions and claims framework before progressing toward commercialization. A conditioner containing PIROCTONE ETHANOLAMINE still requires an effective, validated preservation strategy, despite the ingredient's antimicrobial properties.

EXAMPLE 3: PIROCTONE ETHANOLAMINE SOLUBILITY AND STABILITY SCREENING IN A LEAVE-ON SCALP TONIC

Objective: To investigate the effect of PIROCTONE ETHANOLAMINE concentration on solution clarity, solubility retention, scalp feel, and storage stability in a lightweight leave-on scalp tonic.

Starting components:

PIROCTONE ETHANOLAMINE: approximately 0.05%, 0.10%, and 0.20% by formula weight, evaluated as separate screening levels.

Ethanol (cosmetic grade, where suitable): approximately 5–10%, held constant during the initial active-level comparison.

Co-solvent or humectant (for example, propylene glycol): approximately 2–4%, held constant.

Additional humectant (for example, glycerin): approximately 1–2%, held constant.

Compatible solubilizer, if required: approximately 0.2–1.0%, with the level established by preliminary solubility tests.

Preservative system: as required following microbiological risk assessment and preservative efficacy testing.

pH-adjusting agent: as required to target an illustrative final pH of approximately 5.0–6.0.

Demineralized water: balance to 100% by weight.

This PIROCTONE ETHANOLAMINE screening approach is intended for laboratory evaluation only. Leave-on products involve longer skin contact than rinse-off products; permitted concentrations, exposure assessment, and claims therefore require separate verification. The presence of ethanol does not automatically establish adequate product preservation.

Application approach:

1. Confirm the initial solubility of PIROCTONE ETHANOLAMINE in the selected water–alcohol–glycol system at the intended laboratory processing temperature.

2. Prepare the ethanol and compatible co-solvent portion in a ventilated, appropriately controlled mixing area without ignition sources.

3. Dissolve or pre-disperse PIROCTONE ETHANOLAMINE in the selected compatible phase, then check visually for undissolved particles.

4. Prepare the aqueous humectant phase separately and introduce it gradually into the PIROCTONE ETHANOLAMINE premix according to the solubility results. Monitor for haze or precipitation during dilution.

5. Add the selected preservative and solubilizer where needed, adjust the pH, and complete the batch with demineralized water.

6. Evaluate transparency, pH, odor, sensory feel, and visible PIROCTONE ETHANOLAMINE crystallization after controlled storage at different temperatures.

7. Carry out appropriate packaging-compatibility and microbiological challenge testing. For products intended for sensitive scalps, conduct a suitable finished-product tolerance assessment under qualified supervision.

8. Compare the PIROCTONE ETHANOLAMINE concentrations and choose the formulation that provides acceptable solubility, stability, sensory properties, and substantiated scalp-care performance within the applicable legal limits.

Safety consideration: Ethanol-containing manufacturing systems may present flammability hazards and require appropriate ventilation and ignition-source control. PIROCTONE ETHANOLAMINE must be handled according to the supplier's safety documentation, and the finished leave-on product requires a dedicated skin-exposure and irritation assessment. Avoid unsupported therapeutic claims. Product-specific safety, preservation, stability, and regulatory reviews are mandatory before market release.

QUALITY CONTROL AND PURCHASING CRITERIA

Confirm the specific supplied chemical name, CAS number, EC number and physical form. If a commercial material is delivered as a solution or blend, obtain the full concentration and carrier description and do not equate its mass with the mass of pure salt. This distinction affects labeling, cost comparison, analytical assays, manufacturing and transport.

Assay should be established by an appropriate analytical method and supported by a batch-specific certificate of analysis. A laboratory reference grade publicly lists at least 97.0% purity by both nonaqueous titration and HPLC area; that grade is an illustrative example and not a guarantee for an unspecified cosmetic-grade shipment. Buyers should request the actual offered grade's acceptance criteria and assay definition.

Appearance and color are practical incoming checks, but they do not replace identity and purity testing. Additional quality attributes may include water content, residual free ethanolamine or starting-material impurities, related substances and particle characteristics if these are controlled by the supplier's validated specification. Do not impose unverified universal numerical limits for these attributes merely because a commercial listing mentions them.

A technical data sheet describes typical or specified material characteristics. A safety data sheet identifies hazards and guidance for safe handling and transport of the product as supplied. A certificate of analysis provides lot-specific results against the accepted specification. These three documents serve complementary functions and should be compared for product identity and consistency.

Purchasing and regulatory teams should obtain information about packaging material, packaging size, batch traceability, retest date, manufacturing origin if needed and available regulatory declarations. Supplier statements concerning suitability for cosmetics, local inventory status or special certifications should be confirmed for the exact batch or production site as applicable. The existence of an INCI name does not itself establish that an offered grade satisfies the buyer's quality requirements.

Material with an out-of-specification result should be investigated and segregated rather than automatically reworked into a formula. Particularly for a concentrated antimicrobial ingredient, errors in concentration, identity or dispersion can have both performance and safety implications. Documented change control is also important if the supplier changes grade, manufacturing process or particle profile.

FIRST AID

Inhalation: If Piroctone Ethanolamine powder or dust is inhaled, move the affected person to fresh air and keep them comfortable for breathing. Obtain medical advice if cough, irritation, breathing difficulty or other symptoms occur; use the current SDS and local emergency procedures.

Skin Contact: If Piroctone Olamine contacts the skin, remove contaminated clothing and wash the area with plenty of water. Seek medical advice if irritation develops or persists; contaminated clothing should be cleaned before reuse.

Eye Contact: Piroctone Ethanolamine concentrate is identified as capable of causing serious eye damage in an available supplier safety data sheet. Immediately rinse affected eyes cautiously and thoroughly with water, remove contact lenses if easy to do, continue rinsing and urgently contact a poison center or physician; do not delay medical attention while attempting improvised treatment.

Ingestion: If Piroctone Olamine is swallowed, rinse the mouth and seek medical advice promptly, particularly after ingestion of concentrated raw material. Do not induce vomiting unless specifically instructed by a qualified poison specialist or physician; provide the product's SDS to responders.

Note to Physicians: Piroctone Ethanolamine exposure should be assessed according to the route, amount, symptoms and concentration involved. The available reagent-grade SDS provides no specific antidote and recommends medical assessment as appropriate; treatment is directed by healthcare professionals.

HANDLING AND STORAGE

Handling: Transfer Piroctone Ethanolamine powder using procedures that minimize airborne dust and prevent contamination of clothing and work surfaces. Avoid skin and eye contact, use appropriately designed dispensing tools and wash exposed skin after work.

Engineering Controls: Use suitable local extraction or enclosed handling when weighing and mixing Piroctone Olamine powder. Access to an eyewash facility and safety shower should be part of the workplace risk assessment because concentrate exposure to eyes can be serious.

Personal Protection: Select chemical-resistant gloves, protective clothing and eye or face protection appropriate to the task and the current supplier SDS for Piroctone Ethanolamine. Laboratory scale and bulk manufacturing can require different protection and training.

Respiratory Protection: Where Piroctone Olamine dust may become airborne and local ventilation is insufficient, use respiratory protection selected through the site risk assessment and applicable standards. The material's very low vapor pressure does not eliminate dust exposure risk.

Storage: Keep Piroctone Ethanolamine in its labeled, compatible, tightly closed original container and protect it from contamination, moisture and excessive heat. One reagent-grade SDS specifies refrigerated storage, but this must not be converted into a universal requirement for every industrial grade; follow the exact offered material's written storage instructions.

Material Compatibility: Protect Piroctone Olamine from contact with substances identified as incompatible in the specific SDS, including strong oxidizing agents where indicated. Evaluate storage containers and dispensing equipment for the grade and packaging system in use.

Spill Procedures: For spilled Piroctone Ethanolamine powder, isolate the area as necessary, use appropriate PPE and collect the material without creating dust. Do not dry-brush or use methods that disperse fine particles into the air when safer controlled recovery is available.

Environmental Precautions: Prevent Piroctone Olamine from entering drains or waterways. The material has been assigned a water-hazard class in a German assessment, and measured or modeled aquatic effects require responsible waste containment regardless of variation in individual SDS classification.

Fire Response: Choose extinguishing media appropriate to the surrounding fire, and follow the current Piroctone Ethanolamine SDS and site emergency plan. Combustion or decomposition of organic nitrogen-containing material can release irritating or harmful gases; firefighters require appropriate protective equipment and respiratory protection.

Waste Disposal: Dispose of Piroctone Olamine, spill residues and contaminated packaging through qualified waste routes in accordance with local rules. Do not discharge raw material to wastewater or claim that a biodegradability finding makes uncontrolled release environmentally acceptable.

SAFETY AND TRANSPORT INFORMATION

The hazards of concentrated Piroctone Ethanolamine should be evaluated separately from exposure to finished cosmetic products. A publicly accessible reagent-grade safety data sheet revised in 2026 identifies skin irritation, Category 2 (H315), and serious eye damage, Category 1 (H318). The same document specifies protective gloves and eye or face protection, adequate ventilation, dust control and prompt medical attention after eye exposure.

These reported classifications apply to the identified supplied reagent material; other commercial suppliers may report additional or different categories. A current regional SDS for the exact grade and regulatory region is therefore controlling for labeling, workplace training and dangerous-goods arrangements. In particular, the absence of harmonized classification in an older substance review does not nullify the precautions specified for a supplied product.

Transport classification should not be inferred from the ingredient name alone. One 2026 reagent-grade SDS identifies the product as not regulated as a dangerous good under ADR, IMDG and IATA, with no assigned transport UN number, hazard class or packing group for that particular product. Other published supplier documents classify particular Piroctone Olamine materials under UN 3077, ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S., Class 9, Packing Group III. The difference must be resolved by checking the actual shipment's current SDS and legally required classification; neither classification should be copied universally.

Environmental caution remains appropriate even where a specific transport document says 'not regulated.' German water-hazard information identifies a concern for water protection, and a publicly available chemical hazard assessment found notable aquatic toxicity endpoints. Ready biodegradability in a particular assay is not equivalent to an absence of ecological effects during discharge.

The compound is not a pressurized gas or volatile solvent. However, concentrated powder can expose workers through dust, contact or spills, and the lack of a standard flash point does not justify claiming that storage or fire-response measures are unnecessary. Follow the supplier's stated incompatibilities and the site's chemical storage controls.

Cosmetic regulatory limits should also be kept separate from occupational handling rules. The European Union Annex V preservative entry allows up to 1.0% in rinse-off products and 0.5% in other products, but those values do not define the hazard classification of neat material. In addition, the final-product safety assessment and microbiological or anti-dandruff efficacy substantiation remain separate requirements.

FREQUENTLY ASKED QUESTIONS ABOUT PIROCTONE ETHANOLAMINE

What is Piroctone Ethanolamine?
Piroctone Ethanolamine is the monoethanolamine salt of piroctone, a substituted hydroxypyridone with antifungal activity. Its established cosmetic ingredient name is Piroctone Olamine.

Is Piroctone Ethanolamine the same as Piroctone Olamine?
Yes. Piroctone Olamine is the familiar cosmetic name for the defined piroctone ethanolamine salt identified by CAS 68890-66-4.

What is the CAS number of Piroctone Ethanolamine?
The CAS number for the piroctone monoethanolamine salt is 68890-66-4. The related free piroctone compound has a different CAS number, 50650-76-5.

What is the EC / EINECS number?
The reported EC / EINECS number for Piroctone Olamine is 272-574-2.

What is the molecular formula?
The formula is C16H30N2O3, often written in salt-component notation as C14H23NO2 · C2H7NO.

What is the molecular weight?
The molecular weight of the 1:1 salt is approximately 298.42–298.43 g/mol.

What does the word 'olamine' mean here?
It refers to the monoethanolamine component of the salt. It does not mean that free ethanolamine should be added independently to substitute for the defined ingredient.

What is Octopirox?
Octopirox is an established commercial name associated with Piroctone Olamine. A contract or label should still identify the intended chemical and offered grade.

Is ciclopirox olamine another name for Piroctone Olamine?
No. Ciclopirox olamine and piroctone olamine are chemically different substances and must not be interchanged on the basis of their similar names.

Is piroctone itself identical to piroctone ethanolamine?
No. Piroctone is the underlying free hydroxypyridone, while Piroctone Ethanolamine is its monoethanolamine salt.

What chemical class does the material belong to?
Piroctone Ethanolamine is an organic hydroxypyridone antifungal agent presented commercially as an ethanolamine salt.

What does Piroctone Olamine look like?
The pure or high-purity material is commonly a white to slightly yellow crystalline powder or solid. Specific appearance limits should come from the supplier's grade specification.

Is Piroctone Ethanolamine a liquid ingredient?
The neat chemical is a solid under normal conditions. Commercial blends or solutions may be liquid, but their concentration and carrier must be declared separately.

What is the melting point of Piroctone Ethanolamine?
A substance assessment reports approximately 132 °C, while a specific high-purity laboratory grade specifies 134–138 °C. Grade and method differences explain why these should not be presented as one universal release limit.

What is the boiling point of Piroctone Ethanolamine?
A normal boiling point is not reliably defined because decomposition occurs at high temperature. One public assessment describes decomposition above about 235 °C.

What is the density of Piroctone Ethanolamine?
A published substance assessment reports density or specific gravity of about 1.1 at 21.5 °C. Loose powder bulk density is a separate property and must be obtained for the actual grade.

What is the viscosity of Piroctone Ethanolamine?
Viscosity of the neat substance is not meaningful as a standard liquid parameter because it is a solid. Viscosity of a finished shampoo or other formulation depends on all formula ingredients and processing.

Is Piroctone Olamine water soluble?
Piroctone Ethanolamine has finite but strongly medium-dependent water solubility. Reported values at 20 °C are about 22.1 mg/L at pH 4, 29.8 mg/L at pH 7 and 473 mg/L at pH 9 in the stated test systems.

Why do different websites show different water-solubility values?
Values may come from different pH conditions, solvent environments or testing methods. A single number without its medium and temperature should not be treated as universally applicable.

Is Piroctone Olamine soluble in methanol?
A high-purity laboratory-product description lists it as soluble in methanol. This does not establish that methanol is appropriate for a particular consumer cosmetic formulation.

Does pH matter for formulation?
Yes. The chemical's measured water solubility varies substantially with pH, and the actual formulation's surfactants, solvents and salts introduce additional effects.

Does a clear shampoo prove the ingredient is fully dissolved?
No. Optical clarity alone cannot establish the molecular state or long-term availability of Piroctone Olamine. Stability and assay testing are needed.

What is the principal application of Piroctone Ethanolamine?
Its best-established consumer use is in anti-dandruff shampoos and related scalp-care formulations.

How does Piroctone Ethanolamine help control dandruff?
The ingredient has antifungal activity against susceptible microorganisms associated with dandruff, including Malassezia species. Finished-product performance depends on delivery, use conditions and the multifactorial nature of scalp flaking.

Does Piroctone Ethanolamine kill every fungus?
No. Antifungal susceptibility varies with organism, test conditions and formulation. A broad statement that it eliminates all fungi is not supported.

What is Malassezia?
Malassezia is a genus of yeasts commonly found on skin and scalp. Some species are associated with dandruff and other scalp conditions, but the mere presence of Malassezia does not establish disease.

Is iron chelation part of its mechanism?
The hydroxypyridone moiety can interact with iron ions, and iron-related interference is one proposed antifungal pathway. Researchers continue to investigate additional effects and the importance of chemical speciation.

Does it affect fungal membranes?
Specific laboratory studies, especially with ingredient combinations, have reported effects involving membrane integrity and ergosterol-related processes. These findings cannot automatically be generalized to every formulation containing the compound alone.

Can Piroctone Ethanolamine influence the scalp microbiome?
A published study using a 0.5% Piroctone Olamine shampoo observed microbial-community changes and improved visible flaking over three weeks. Those observations are study-specific and do not promise identical outcomes for every consumer.

Is Piroctone Ethanolamine used in conditioners or scalp tonics?
It may be considered in selected personal-care products, provided the ingredient is legally allowed for the intended category and the final product is validated for safety, stability and claims.

Can Piroctone Ethanolamine be used in leave-on products?
Certain leave-on cosmetic formats are possible subject to regulatory limits and safety assessment. European Annex V sets 0.5% as the preservative limit for products other than rinse-off products.

What is the European Union limit in rinse-off products?
The Annex V preservative entry lists a maximum of 1.0% in rinse-off products. This is a regulatory ceiling, not a universal recommended dose.

What is the European Union limit in other products?
The Annex V preservative entry lists 0.5% for other products. Product classification and any use for additional functions require an appropriate legal assessment.

Does an INCI name mean the product is automatically approved everywhere?
No. An INCI name is an ingredient-labeling identifier, while authorization depends on jurisdiction, product type, use and applicable law.

Is Piroctone Olamine a cosmetic preservative?
Piroctone Ethanolamine is listed in European cosmetic-preservative legislation. Whether it adequately preserves a particular formula must be shown through suitable finished-product testing.

Is anti-dandruff efficacy the same as preservation efficacy?
No. Scalp anti-dandruff performance concerns effects during use on the scalp, while preservation concerns microbial protection of the product during storage and consumer use.

Can Piroctone Ethanolamine replace a complete preservative system automatically?
No. A product may require additional preservation measures and testing depending on its water activity, packaging, pH and contamination risks.

Is it a pharmaceutical ingredient?
Research and some product categories discuss antifungal uses, but the chemical's presence does not make every finished product an authorized medicine. Classification and approval depend on local law and product claims.

Can it treat seborrheic dermatitis?
Clinical and laboratory research is relevant to scalp conditions involving Malassezia, but treatment claims require appropriate finished-product evidence and legal authorization. A generic cosmetic ingredient profile cannot establish a specific treatment indication.

Does it stop hair loss?
No general hair-loss cure can be established from the compound's antifungal activity. Claims about reducing shedding require separate well-controlled finished-product evidence and appropriate medical or regulatory interpretation.

Does it cause hair growth?
There is no basis for a universal hair-regrowth promise from the chemical identity alone. Studies on scalp condition should not be recast as proof of new-hair generation.

Can it be used in facial skin products?
Any facial formulation needs its own legal classification, safety assessment and supporting evidence. Anti-dandruff shampoo data do not automatically establish facial-product safety or efficacy.

Can it be used in deodorants?
Such an application would require evidence for the intended function and careful confirmation of the relevant regulatory category and formulation compatibility. The ingredient's antimicrobial nature alone is not proof of approval or finished-product efficacy.

Is it an approved food additive?
No established E-number or INS additive designation applies to Piroctone Olamine in this profile. Cosmetic status does not confer food-use permission.

Is it a biocide or disinfectant?
An antifungal property does not automatically mean a product is an authorized biocide or disinfectant. Specific regulatory approval and demonstrated efficacy would be needed for such marketing.

What are the main formulation challenges?
Water-phase solubility, incorporation, pH effects, physical stability, ingredient compatibility and delivery to the target area are major considerations.

Can surfactants help incorporate it?
Surfactant assemblies can influence solubilization and distribution, but the effect depends on the exact formulation. No universal compatibility can be assumed.

Should Piroctone Olamine always be added at a fixed temperature?
No universally validated processing temperature can be specified without the grade's supplier guidance and the actual formulation's stability data. Avoid needless thermal exposure and follow documented processing instructions.

Does higher concentration always improve performance?
No. Increasing concentration can introduce regulatory, stability and tolerance problems and may not proportionately increase delivered activity.

Can it be mixed with climbazole?
Combinations have been evaluated scientifically, but a particular mixture requires its own legal, compatibility, safety and efficacy assessment. Synergy in one study is not a blanket guarantee.

Can it replace zinc pyrithione directly?
Not without reformulation and review of applicable legislation. The materials differ in chemical identity, physical behavior and regulatory treatment.

Can it replace ketoconazole directly?
No. Ketoconazole may be used in medically regulated products, and laboratory comparisons do not establish regulatory or clinical interchangeability.

Does Piroctone Olamine contain zinc?
No. Its defined salt composition includes the piroctone moiety and monoethanolamine, not zinc.

Is it a surfactant or a foaming agent?
No. It is primarily an antifungal or cosmetic-preservative ingredient, not a primary detergent surfactant or foam booster.

What does the reported pKa mean?
A reported pKa of about 5.9 at 20 °C describes acid-base behavior under the referenced measurement conditions. It should not be treated as a prescribed shampoo pH.

What is log Kow?
A reported log Kow of about 3.86 at 20 °C is a measure relevant to partitioning between octanol and water. It is not a direct measure of shampoo deposition or antifungal efficacy.

Is Piroctone Olamine volatile?
The reported vapor pressure is very low at room temperature, so volatility is limited. Powder dust may still cause occupational exposure.

Is the raw powder safe to handle without PPE?
No. A current reagent-grade SDS identifies skin irritation and serious eye damage hazards and recommends protective equipment and dust controls.

What should be done after eye contact?
Immediately flush the eyes with water, remove contact lenses if easy to do, continue rinsing and urgently seek medical or poison-center help. Follow the current SDS for the actual material.

What should be done after skin contact?
Remove contaminated clothing, wash with plenty of water and obtain medical advice if irritation develops or persists.

What if the powder is inhaled?
Move the person to fresh air and seek medical advice if symptoms occur. Prevent recurrence through appropriate ventilation and dust-control practices.

What if the powder is swallowed?
Rinse the mouth and obtain medical advice, providing the SDS to the clinician. Do not induce vomiting without professional instruction.

Is Piroctone Olamine environmentally harmless?
No such blanket claim is justified. Published hazard assessments identify aquatic concerns, so spills and untreated releases must be prevented.

Is it biodegradable?
A published chemical assessment discusses evidence of ready biodegradability under particular test conditions. This does not mean concentrated releases are safe for aquatic organisms.

Does it have a UN number?
Not universally. A 2026 SDS for one reagent grade says it is not regulated under ADR, IMDG or IATA, while other supplier documents identify UN 3077 for certain supplied materials.

What does UN 3077 mean in a supplier document?
It is a dangerous-goods designation for an environmentally hazardous solid, not otherwise specified, under the applicable transport rules. Its relevance must be established for the actual shipped grade and classification.

Can it be stored at room temperature?
Storage requirements depend on grade and supplier. One laboratory-grade SDS specifies refrigeration, so request and follow the exact supplied material's written storage instructions.

What packaging is suitable?
Use compatible, tightly closed, correctly labeled packaging selected for the supplied grade and shipping conditions. A specific container size or material cannot be guaranteed without supplier documentation.

What is the shelf life?
The shelf life of Piroctone Ethanolamine depends on grade, packaging and storage. Ask for the supplier's supported shelf-life or retest statement rather than assuming a universal period.

Does it have a fixed purity specification?
No universal commercial purity limit applies to every grade. A particular high-purity reagent lists at least 97.0% by defined tests, while other grades require their own specifications.

How should product purity be verified?
Review the offered technical specification and lot certificate of analysis, including the defined assay method. HPLC and titration measurements should be interpreted according to the stated acceptance criteria.

Why are TDS, SDS and COA all important?
A TDS provides technical characteristics, an SDS provides safe-handling and regulatory hazard information, and a COA reports measurements for the supplied lot. None replaces the others.

How can a buyer confirm the correct raw material?
Match the name, CAS 68890-66-4, EC 272-574-2, physical form and proposed grade across supplier documents. Verify that no substitution with free piroctone or ciclopirox olamine has occurred.

Can Ataman Kimya discuss a suitable grade?
Customers may contact Ataman Kimya with the intended product type, location of sale, formulation requirements, desired documentation and purchase quantity to ask about suitable grades and a quotation. Availability and specific certifications require confirmation.

TECHNICAL SUMMARY

Piroctone Ethanolamine is the 1:1 monoethanolamine salt of piroctone, identified as CAS 68890-66-4 and EC 272-574-2 and labeled in cosmetics as Piroctone Olamine. The salt has formula C16H30N2O3 and molar mass approximately 298.43 g/mol. Its structure includes a substituted hydroxypyridone capable of metal coordination and an organic side chain that influences physicochemical interactions.

The leading application of Piroctone Ethanolamine is anti-dandruff hair and scalp care. Research supports antifungal activity against susceptible Malassezia species and documents improvement in visible flaking in particular tested shampoos, while precise molecular pathways and benefits remain formulation- and study-dependent. The ingredient is also listed in European cosmetic-preservative rules at up to 1.0% in rinse-off products and 0.5% in other products for its preservative use.

Important purchasing and formulation considerations include pH-dependent aqueous solubility, active availability, grade purity, storage instructions and the reliability of finished-product claims. Reported substance data include melting around 132 °C, very low vapor pressure and marked water-solubility variation across pH conditions; these must not be confused with physical or release specifications for all grades. Concentrated material requires protective handling, especially eye protection, and transport status must be determined from the exact grade's current documentation.

A responsible commercial specification should combine correct chemical identification with a defined assay, current safety data sheet, lot-specific certificate of analysis and application-relevant stability or efficacy testing. Generic claims of universal compatibility, guaranteed anti-dandruff performance or worldwide regulatory approval should be avoided.

CONTACT ATAMAN KIMYA

For information about Piroctone Ethanolamine (Piroctone Olamine), customers may contact Ataman Kimya to discuss the intended application, product category, applicable regulatory requirements and technical characteristics of a potentially suitable grade. Supporting documents such as a technical data sheet, safety data sheet, batch-specific certificate of analysis and appropriate packaging information may be requested for review, subject to availability.

Ataman Kimya can also be contacted to discuss desired order quantity, current availability, packaging options and a quotation. Any proposed grade, specification, supply arrangement or certification should be confirmed through the applicable commercial and technical documentation before ordering.

Ataman Chemicals
Phone: +90 216 577 10 10
Email: info@atamankimya.com