PLURAFAC LF 431

CAS Number: 111190-40-0 (product CAS in current commercial product finder; check regional documentation for the specific supplied grade)
EC Number: Not reliably established for this precise commercial grade in the reviewed public documents
Molecular Formula: Variable; distribution of end-capped fatty alcohol alkoxylates
Molecular Weight: Variable; no single molecular weight established for the commercial grade
Boiling Point: Not applicable according to the reviewed February 2018 product SDS; do not assume a pure-compound boiling point
Melting Point: Not a sharply defined molecular melting point; representative setting point approximately -5 °C (DIN 51583, November 2023 family technical information)
Viscosity: Approximately 45 mPa·s at 23 °C; approximately 70 mPa·s at 10 °C and 120 mPa·s at 0 °C (dynamic, EN 12092/Brookfield LVT, representative 2023 data)
Density: Approximately 0.96 g/cm3 at 23 °C (DIN 51757, representative 2023 data); approximately 0.97 g/cm3 at 20 °C in a 2018 regional SDS

COMMON PRODUCT AND CHEMICAL NAMES

Plurafac LF 431
Plurafac® LF 431
Fatty alcohol alkoxylate 7 (description in a reviewed regional SDS)
Alkyl-end-capped fatty alcohol alkoxylate (commercial chemical description)
End-capped alcohol alkoxylate (broader family description)
Low-foaming nonionic surfactant (functional descriptor)

These names are not interchangeable chemical registrations. Plurafac LF 431 is the grade designation, whereas alcohol alkoxylate and low-foaming surfactant also describe numerous materials with different alcohol-chain distributions, alkylene-oxide patterns, test data and hazard classifications.

WHAT IS PLURAFAC LF 431?

Plurafac LF 431 is a commercially supplied, liquid surfactant used as an ingredient in detergent and cleaning product development. The available product information describes it as a low-foaming nonionic alcohol alkoxylate with an alkyl-capped structure, making it distinct from some conventional uncapped alcohol ethoxylates. The available technical information describes a clear or slightly cloudy, colorless to yellowish liquid under ordinary handling conditions.

The word 'nonionic' refers to the absence of a permanent ionic charge on the surfactant head region. It does not mean that the chemical has no interactions with electrolyte-containing solutions, and it certainly does not establish that every concentrated acid, caustic solution or oxidizing ingredient can be mixed with it safely. Nonionic behavior is one design element used by formulators to balance detergency, phase compatibility and dynamic foam performance.

The manufacturer's current product finder identifies the grade with product reference 30044045. The published November 2023 family technical information reports approximately 100% concentration, meaning a substantially active surfactant delivery form rather than a conventional dilute water solution. This figure is an approximate product-family description and must not be transformed into a promise of precisely 100.00% chemical assay or zero water and impurities in every batch.

Plurafac LF 431 is not itself an antimicrobial disinfectant, an alkali builder, a sequestering agent or a water-softening salt. Those functions, if required, depend on a finished system containing other appropriately selected and authorized constituents. Its primary technical role is to manage interfaces and assist with cleaning while keeping foam within an acceptable operating range.

CAS NUMBER, EC / EINECS NUMBER AND CHEMICAL IDENTIFICATION

The commercial product finder associates Plurafac LF 431 with CAS number 111190-40-0. Product reference 30044045 provides an additional useful purchasing and document-identification key; it is not a CAS, EC or REACH registration number. Purchasers should include the full grade name, product reference and destination market when requesting documentation, because regional chemical inventory and SDS records may describe the same broad alkoxylate family differently.

An exact EC/EINECS identifier for this grade was not consistently established from the reviewed primary product records. Accordingly, inserting an apparently plausible number from another alcohol ethoxylate or propoxylate would be misleading. Similarly, the historical U.S. SDS describes the constituent as 'fatty alcohol alkoxylate 7' while withholding the compositional CAS under trade-secret conventions. That historical notation should not be treated as a contradiction to be silently resolved by inventing a detailed molecular structure.

The delivered grade is not a single analytical molecule with a universally fixed carbon number and alkoxylation degree. Different polymer-chain lengths and alkylene-oxide unit distributions can coexist in the active surfactant material. The descriptors 'ethoxylated,' 'propoxylated' and 'end-capped' describe a chemical family; they should not be mistaken for a complete structural specification unless supported by the relevant manufacturer documentation.

INCI and E Number/INS Number fields are intentionally omitted: no reliable, grade-specific INCI identity or food-additive designation was established, and this material is being presented as an industrial cleaning ingredient rather than a food or cosmetic additive.

CHEMICAL STRUCTURE AND MOLECULAR CHARACTERISTICS

Plurafac LF 431 belongs to a family of fatty alcohol alkoxylates. Such surfactants contain a relatively nonpolar hydrocarbon group derived from an alcohol and a polyether region derived from alkylene-oxide chemistry. In broad terms, the hydrocarbon portion has affinity for oily soils and relatively nonpolar surfaces, whereas polyether oxygen atoms can interact with water through hydrogen-bond acceptance and hydration.

The manufacturer's November 2023 document explicitly identifies Plurafac LF 431 together with certain related grades as alkyl capped. End-capping means that the terminal polyether functionality has been modified rather than leaving the same terminal hydroxyl character found in many ordinary alcohol ethoxylates. This can influence hydration, clouding, adsorption and foam properties, although the exact effect depends on the architecture of the full surfactant mixture.

A generic schematic description is R–O–(alkylene oxide)n–R', where R stands for the fatty-alcohol-derived portion and R' indicates a terminal organic cap; this is a conceptual illustration, not a verified single-molecule formula for this grade. It would be inaccurate to assign an exact number of ethylene oxide or propylene oxide repeat units or a unique molecular weight from this schematic. Analytical verification of a distribution needs suitable supplier information and methods designed for alkoxylated materials.

As a nonionic surfactant, its behavior depends on the balance between hydrophilic and hydrophobic groups, the concentration of other formulation components, and temperature. These same variables help explain why a surfactant may reduce surface tension in a laboratory test while remaining insoluble as a clear 10% mixture in water.

PHYSICAL AND CHEMICAL PROPERTIES

Commercial identity: Plurafac LF 431, end-capped fatty alcohol alkoxylate
Commercial product reference: 30044045
Physical form: Liquid at 23 °C (representative 2023 technical information)
Appearance: Clear to slightly cloudy; colorless to yellowish (general family and historical SDS descriptions)
Approximate concentration: 100% (family technical information; not an exact batch assay)
Dynamic viscosity at 23 °C: Approximately 45 mPa·s (EN 12092, Brookfield LVT)
Dynamic viscosity at 10 °C: Approximately 70 mPa·s (EN 12092, Brookfield LVT)
Dynamic viscosity at 0 °C: Approximately 120 mPa·s (EN 12092, Brookfield LVT)
Density at 23 °C: Approximately 0.96 g/cm3 (DIN 51757)
Density at 20 °C: Approximately 0.97 g/cm3 (2018 regional SDS)
Setting point: Approximately -5 °C (DIN 51583; representative 2023 value)
Historical solidification-temperature figure: Approximately -3 °C (2018 regional SDS; difference reflects documentation and test context)
pH value: Approximately 6 (EN 1262, solution B, representative 2023 data)
Cloud point, method D: Approximately 46 °C (EN 1890, specified butyldiglycol solution)
Cloud point, method E: Approximately 40 °C (EN 1890, specified butyldiglycol solution)
Foam formation: Approximately 15 mL (EN 12728, representative 2023 test)
Surface tension: Approximately 30 mN/m (EN 14370, 1 g/L in distilled water, 23 °C, Harkins-Jordan correction)
Wetting at 23 °C, 0.5 g/L surfactant: Approximately 85 seconds (EN 1772; distilled water plus 2 g/L soda ash)
Wetting at 23 °C, 1 g/L surfactant: Approximately 30 seconds (same test)
Wetting at 23 °C, 2 g/L surfactant: Approximately 15 seconds (same test)
Wetting at 70 °C: More than 300 seconds at each of those three concentrations under the corresponding EN 1772 conditions
Water solubility: Not clearly soluble at 10% and 23 °C in the manufacturer's qualitative screening
Ethanol and isopropanol solubility: Clear soluble in the 10% at 23 °C qualitative screening
Mineral spirit and spindle oil solubility: Clear soluble in the same qualitative screening
Flash point: Above 100 °C (DIN 51758; historical 2018 SDS)
Vapor pressure: Below 0.1 hPa at 20 °C (historical 2018 SDS)
Autoignition temperature: Above 200 °C (DIN 51794; historical 2018 SDS)
Thermal decomposition: Above 300 °C reported in historical 2018 SDS; not a recommended processing temperature
Boiling point: Not applicable in the historical SDS
Shelf life: Not reliably established from the reviewed public technical documentation; confirm with current supplier specifications.

The preceding measurements are not all from one document or one sample. The main representative values come from the November 2023 family technical bulletin, while the flash point, vapor pressure and some other safety-related properties come from a February 2018 U.S. SDS. Test method, concentration, temperature and publication date therefore matter. The representative data should never be copied into a guaranteed batch specification without a current certificate of analysis or contractual confirmation.

UNDERSTANDING CLOUD POINT AND PHASE BEHAVIOR

Cloud point is a temperature at which a nonionic surfactant test mixture changes optical appearance because surfactant hydration and phase behavior change. It is not a universal boiling point, melting point or performance cut-off. For low-water-solubility grades, a laboratory method often uses a defined mixed-solvent solution rather than plain water, and the cloud point must be read together with the stated method.

For Plurafac LF 431, the November 2023 technical bulletin reports approximately 46 °C with EN 1890 method D and approximately 40 °C with method E. Method D uses 5 g surfactant with 45 g of a 250 g/L butyldiglycol solution, whereas method E uses 5 g surfactant with 25 g of the same specified solution. The two measurements are therefore neither duplicates nor estimates of one universal temperature in ordinary tap water.

No method A cloud point in distilled water is reported for LF 431 in this technical table. That absence should not be filled using the value for a neighboring LF grade. In particular, the related LF 231 and LF 431 products share alkyl-end-capped chemistry but have different method D and E values and different application behavior.

In real cleaner formulations, changes in electrolyte level, solvent, temperature and the presence of other surfactants may alter whether the mixture stays clear, hazy or separated. A formulator should measure appearance, phase stability and cleaning response over the intended use and storage temperature profile rather than extrapolate a laboratory cloud point to every operating environment.

SURFACE TENSION, WETTING AND LOW-FOAM PERFORMANCE

Surface tension is an equilibrium interfacial property, whereas wetting a surface during machine washing can be strongly time-dependent. The manufacturer's standardized measurement of approximately 30 mN/m at 1 g/L and 23 °C indicates that the material can modify the water/air interface under the specified experimental method. It does not mean that every aqueous cleaning solution containing the material will have the same surface tension.

The EN 1772 wetting figures at 23 °C improve as surfactant concentration increases in the specified soda-ash-containing test medium: approximately 85 seconds at 0.5 g/L, 30 seconds at 1 g/L and 15 seconds at 2 g/L. These figures are laboratory comparison values, not guaranteed time-to-clean values for real oily surfaces or fabrics. Wetting depends on soil, water quality, contact time, mechanical energy and the other ingredients.

At 70 °C, the corresponding EN 1772 figures are reported as more than 300 seconds across the tested concentrations. This is a particularly important boundary on performance claims: the product's industrial suitability cannot be reduced to an assertion that higher temperature always improves wetting. Although the grade can be used in selected high-temperature cleaning applications, the formulation must be screened under its actual temperature conditions.

The representative EN 12728 foam formation result is 15 mL. It establishes low foam in one standardized experiment; it is not a prediction of foam height in a foaming pump, spray washer or surfactant blend. Foam generation and decay can change greatly when anionic or amphoteric surfactants, salts and soils are present.

WATER SOLUBILITY, SOLVENT COMPATIBILITY AND CLARITY

A 10% concentration of Plurafac LF 431 is recorded as insoluble, meaning not clearly soluble, in distilled water and potable water at 23 °C in the manufacturer's qualitative screening. The same table reports no clear solubility in 5% sodium hydroxide solution, 5% hydrochloric acid and 5% salt solution. These are observations about the appearance of particular mixtures, not proof of chemical decomposition under those conditions.

The grade is reported as clearly soluble at 10% in mineral spirit, spindle oil, ethanol and isopropanol under the specified test. This emphasizes the relatively hydrophobic character of the end-capped surfactant and can guide early compatibility testing. However, a clear solution in a test solvent does not mean that the solvent is appropriate for every intended cleaner or legal market, or that an industrial formulation will remain stable after dilution into water.

The product-family technical information notes that certain LF surfactants can be solubilized using alcohols, glycols or hydrotropic additives such as sodium cumene sulfonate. Any such approach must be validated for the exact LF 431 formulation: the nature and amount of co-solvent, order of addition, salt load, final concentration, material compatibility and safety of the complete product are all relevant. No universal hydrotrope percentage or guaranteed clear formula is established by the publicly reviewed information.

Chemical compatibility and clear solubility are different questions. The commercial product finder emphasizes excellent caustic stability and resistance to yellowing on contact with sodium hydroxide beads, but the qualitative solubility table does not show a clear solution in 5% caustic soda. A stable surfactant molecule can remain cloudy or phase separate because of its hydrophilic-lipophilic balance or the conditions of the test. Do not convert the caustic-stability statement into permission to combine materials without a process-specific risk assessment.

VISCOSITY DURING DILUTION AND PROCESSING

Plurafac LF 431 has a comparatively low neat-product viscosity, with the 2023 technical sheet reporting approximately 45 mPa·s at 23 °C. As the liquid is mixed with water, the viscosity can change nonlinearly instead of decreasing smoothly. This behavior matters for metering, pumping, mixing, unloading and laboratory sample preparation.

The manufacturer's water-addition table, measured at 23 °C with a Brookfield LVT instrument, gives approximately 45 mPa·s for the undiluted grade, 70 mPa·s after adding 10% water, 80 mPa·s at 20%, 90 mPa·s at 30%, 100 mPa·s at 40%, 130 mPa·s at 50%, 110 mPa·s at 60%, 30 mPa·s at 70%, and less than 20 mPa·s at both 80% and 90% water addition. These values apply to the defined experimental mixtures and should not be treated as the viscosity of finished alkaline or electrolyte-rich detergent formulas.

The technical bulletin advises stirring the surfactant into water during preparation; reversing the addition order may yield excessive viscosity at certain intermediate concentrations. That recommendation is particularly relevant to process design because local concentration gradients can produce different mixing behavior from the final bulk composition. The appropriate equipment, mixing energy and temperature still require separate engineering evaluation.

An increase in viscosity during dilution is not evidence that the substance has become a gel-forming thickener in the sense used for water-soluble polymers. It reflects particular surfactant-water structures and phase interactions in a limited concentration range. A formulated cleaner containing hydrotropes, salts or additional surfactants may show an entirely different viscosity curve.

HOW DOES PLURAFAC LF 431 WORK AT THE MOLECULAR LEVEL?

The functional activity of Plurafac LF 431 begins with amphiphilic molecules encountering an oil-water, solid-water or air-water interface. Their nonpolar regions can associate with relatively hydrophobic surfaces or soils, while the polyether regions engage with water. This tendency can lower interfacial free energy and change how a wetting liquid spreads or how detached soil is dispersed.

When used alongside suitable builders, alkalinity sources and mechanical action, surfactants can facilitate the release of oily contamination and reduce redeposition. They do not perform alkaline hydrolysis or chelation on their own merely because they are used in alkaline cleaners. Their role should be assessed in relation to the full recipe, the soil's chemistry and the process equipment.

The low-foaming character is linked to the surfactant's overall molecular balance and the properties of the dynamic thin liquid films that form around bubbles. Film drainage, surface elasticity, adsorption dynamics, temperature and co-surfactants all affect foam persistence. The precise mechanism cannot be quantified for a commercial grade from a generic structural formula alone, and the product should not be portrayed as a silicone antifoam or a universal instant foam destroyer.

End-capping contributes to the property set identified in the manufacturer's documentation, including stability in certain strongly alkaline conditions. Nevertheless, different end-capped alkoxylates with similar nominal concentrations are not automatically interchangeable. Small differences in alkylene oxide distribution and hydrophobic chain length can change cloud point, wetting, water solubility and compatibility.

WHICH INDUSTRIES USE PLURAFAC LF 431?

Published product information identifies industrial cleaning, institutional cleaning and sanitation, food-service and kitchen hygiene, commercial laundry and food and beverage processing as relevant application sectors. These are industrial-sector descriptions, not blanket approvals for direct food contact, use on skin or sanitizing claims.

The practical common denominator is the need for controlled foam in systems involving water movement, spray jets, pumps, mechanical agitation or repeated recirculation. A high-foaming surfactant may be inappropriate in such equipment even when it has good laboratory detergency, because uncontrolled foam can interfere with sensor operation, fluid circulation, filling, rinsing and visible soil removal.

Plurafac LF 431 can be considered as one component of a multi-ingredient system in which alkalinity, builders, hydrotropes, corrosion control and soil-specific solvents perform their separate functions. A suitable formulation still needs tests for material compatibility, operating temperature, surface residue, foam behavior and safe discharge.

PLURAFAC LF 431 IN AUTOMATIC DISHWASHING

Machine dishwashing formulations require cleaning under strong agitation and frequent spray contact while keeping foam sufficiently low for the machine's hydraulic system. Plurafac LF 431 may be assessed as a low-foaming surfactant contribution to such systems, especially when the formulation contains alkaline cleaning ingredients. The manufacturer's marketed uses include food-service and kitchen hygiene, and its product description stresses caustic stability.

This potential application should not be interpreted as a verified universal dose or an approval for every dishwasher detergent. Formulators must test stain and grease removal, glass and metal compatibility, spotting, filming, rinsing and foam stability with representative food soils. The surfactant's lack of clear solubility in water at a 10% standalone concentration also makes the finished product's physical stability an important design issue.

The detergent may additionally require builders, corrosion protectants and water-hardness management, none of which are supplied automatically by LF 431. Anionic surfactants, rinse aids or other nonionics can change foam dynamics, so performance should be measured in the complete machine-washing cycle rather than inferred from the neat ingredient's EN 12728 value.

PLURAFAC LF 431 IN FOOD-SERVICE AND KITCHEN HYGIENE

Commercial kitchen cleaning involves greasy equipment, floor and wall surfaces, utensils, conveyor systems and washing machines. Different cleaning processes demand different concentrations, temperatures, materials and rinsing procedures; therefore LF 431 is relevant as an industrial formulation ingredient rather than a finished kitchen disinfectant.

In a suitably designed cleaning system, low foam helps maintain predictable spray behavior and reduces unwanted foam accumulation. Interfacial activity may assist oily soil removal when used together with the detergent's alkaline or solvent ingredients. However, any claim about removal of a particular soil type or compatibility with aluminum, stainless steel, seals and elastomers needs actual testing.

Where a cleaned surface may contact food, operators and manufacturers must evaluate the complete cleaning product, its residue and rinse requirements against the applicable local framework. The inclusion of one surfactant in a sector catalog does not demonstrate food-additive authorization or direct-food-contact suitability for the concentrated raw material.

PLURAFAC LF 431 IN FOOD AND BEVERAGE PROCESSING CLEANERS

Food and beverage facilities use circulation systems, pipework, tanks and other fixed equipment that often call for consistent detergent behavior with limited foaming. The producer lists food and beverage processing among LF 431 application markets and specifically highlights acidic cleaning-in-place solutions as a wider product-family area, but an application-sector listing alone is not a validated CIP recipe.

In CIP development, the surfactant can be screened for foam formation, soil removal, clarity and compatibility under defined caustic or acid conditions. The strong caustic-stability claim is notable, yet the qualitative solubility screen reports no clear solution in 5% caustic soda. Both observations should be maintained in technical evaluations: resistance to color change or chemical deterioration is not the same as remaining homogeneous at any alkali concentration.

CIP performance is also affected by temperature, flow regime, water hardness, residue type and the cleaning circuit's pump and sensor requirements. The standardized 70 °C wetting results for neat LF 431 exceed 300 seconds under the reported EN 1772 conditions, so high-temperature use should be based on application-specific demonstrations rather than a general claim of faster hot wetting.

PLURAFAC LF 431 IN INDUSTRIAL HARD-SURFACE CLEANING

Industrial hard-surface cleaners may need to remove oils, process residues and particulate deposits from metals, plastics, sealed floors and equipment surfaces. In these products, a low-foaming nonionic surfactant can help the detergent contact soil without creating excessive air incorporation during pumping, spray application or mechanical scrubbing.

Plurafac LF 431 may be considered within a surfactant package that balances surface wetting, emulsification, defoaming tendencies and rinsability. That package may require hydrotropes or co-solvents to deal with the grade's limited direct water solubility. There is no basis to guarantee that every formulated cleaner will be water-clear, residue-free or suitable for every surface.

Where equipment includes sensitive coatings, painted panels, soft metals or polymer seals, testing should cover compatibility with the complete cleaner, not the surfactant alone. Corrosion, discoloration and surface attack usually depend on pH, builders, solvents and operating conditions as well as any surfactant selection.

PLURAFAC LF 431 IN COMMERCIAL LAUNDRY

Commercial laundry operations can benefit from controlled foam because excessive froth may impair water movement, mechanical action and rinse extraction. The commercial product listing includes this sector among potential applications for LF 431. Its useful role is therefore best framed as a component of low-foam detergent systems, rather than as an independently proven best-performing laundry surfactant.

In fabric cleaning, effectiveness depends on fibers, stain type, temperature, alkalinity, detergent co-ingredients and washing machine design. LF 431's wetting results should not be taken as proof of rapid penetration of every textile; indeed, its 70 °C standardized wetting performance is limited under the reported test. Comprehensive fabric, colorfastness and rinsing trials are needed before commercial deployment.

A concentrated surfactant is not the same as a complete laundry detergent. Builders, water conditioners, anti-redeposition ingredients and stain-specific chemistry need separate selection where the intended application requires them.

PLURAFAC LF 431 IN INSTITUTIONAL CLEANING AND SANITATION

Institutions such as hotels, hospitals, public buildings and service facilities may operate floor scrubbers, mechanical washers and recirculating cleaning systems that perform poorly when a detergent generates persistent foam. A low-foaming surfactant can be assessed to balance hydraulic operating behavior with adequate cleaning, subject to end-use validation.

The sector expression 'cleaning and sanitation' must not be read as a claim that Plurafac LF 431 kills microorganisms. Cleaning is the physical and chemical removal of soil; disinfection and antimicrobial claims require separate active ingredients, evidence and regulatory authorization. An industrial raw material should never be labeled as a standalone disinfectant without an appropriate approved basis.

Workers should manage splash exposure carefully, because the reviewed 2018 SDS classifies the concentrated surfactant as capable of causing serious eye damage. This risk remains important even when a suitably formulated final cleaning product may have a different exposure and classification profile.

LOW FOAMING VERSUS DEFOAMING: A PRACTICAL DISTINCTION

A low-foaming surfactant is one that produces relatively little foam under a specified set of conditions. A defoamer is judged by its ability to destabilize foam already created, and performance is usually measured in a defined mixed system. Although the commercial product description mentions wetting, low foaming and even defoaming as possible behaviors, these are not equivalent guaranteed performance characteristics.

The 15 mL EN 12728 result is useful comparative evidence for LF 431's low-foam profile. It does not directly quantify how quickly the material will collapse foam produced by a highly foaming anionic surfactant in an alkaline concentrate. A properly designed formulation study may measure initial foam height, dynamic foam buildup, collapse time and pump cavitation at the intended operating temperature.

Soils themselves can modify foam stability, sometimes suppressing it and sometimes increasing it. Mixing sequence, water hardness and co-surfactant ratio further complicate the prediction. Claims of 'zero foam' across all cleaning conditions are therefore not defensible from the published LF 431 test data.

HIGH-ALKALI PERFORMANCE AND CAUSTIC STABILITY

The current product description specifically reports excellent caustic stability and indicates that the material does not yellow on direct contact with sodium hydroxide beads. This is a useful distinction when evaluating surfactants for strongly alkaline cleaner development. However, it is a described performance feature, not a blanket assertion that every alkali concentration or exposure condition is appropriate or that mixtures will remain transparent.

For example, the manufacturer reports no clear solubility in a 10% LF 431 test mixture prepared with 5% caustic soda at 23 °C. The older regional SDS also contains broad cautionary language about avoiding incompatible reactive chemicals and lists caustics or alkalines among substances requiring care. These pieces of evidence describe different questions: demonstrated resistance to yellowing, phase compatibility in a specified screening solution and general safety precautions for chemical mixing.

A responsible evaluation should therefore record the concentration of caustic, temperature, order of addition, time-dependent appearance, color drift, viscosity and retained surfactant function. Such tests help determine whether a given formulation is practical and safe, but they should not be replaced by an unverified promise of unrestricted alkali compatibility.

MIXED SURFACTANT SYSTEMS AND FOAM CONTROL

In practice, industrial cleaning products rarely rely on one surfactant characteristic alone. A high-wetting component may be paired with a lower-foam component to balance cleaning speed and mechanical compatibility; a hydrotrope may be needed to improve clarity; and builders may be chosen to address water hardness or soils. The blend can behave quite differently from the individual ingredients.

Plurafac LF 431 should be screened in realistic mixtures rather than assigned a universal percentage. Useful screening criteria include cloudiness after temperature cycling, foam under recirculation, grease removal, spray behavior, rinsing and chemical compatibility. Changes should be made methodically so that the reason for an observed improvement or failure can be identified.

The end-capped structure and relative hydrophobicity may make certain co-surfactant choices especially influential. Nevertheless, no publicly verified universal synergistic ratio or guaranteed compatibility with a named surfactant family was found for this grade, so such assertions are intentionally not included here.

TEMPERATURE, WATER HARDNESS AND ELECTROLYTES

Temperature influences surfactant solvation, foam persistence, phase boundaries and mixture viscosity. The marked difference between wetting behavior at 23 °C and 70 °C in the reported EN 1772 tests is a strong reminder that a surfactant's suitability is process-specific. The product may still be useful at high cleaning temperatures when combined with other ingredients, but that must be proved in the actual formula.

Water hardness contributes calcium and magnesium salts that can interact with the rest of the detergent system, even when the chosen surfactant itself is nonionic. Similarly, sodium chloride or caustic electrolyte content may reduce solubility or shift clouding behavior. Published 10% solubility-screen entries for LF 431 are negative in the tested salt, acid and caustic solutions, highlighting the importance of compatibility checks.

No generic 'works in all hard water' or 'salt stable at any loading' claims should be made. Water quality should be treated as a controlled formulation variable, with appropriate compatibility studies and finished-product checks.

INDUSTRIAL APPLICATIONS AND PERFORMANCE EVALUATION

Pilot testing is the bridge between a representative supplier bulletin and commercial application. For a recirculating cleaner, useful tests include foam volume and stability, pump flow, surface coverage, ability to lift the target soil, rinse residue and tank stability. For an automatic washer, spray pressure, spotting and wash-cycle consistency may be more important than foam observed in a beaker.

Plurafac LF 431 can contribute to such designs because it has documented low foam, defined wetting behavior and claimed caustic stability. Equally, its poor clear-water solubility and unusual temperature response can introduce formulation challenges. Selecting the grade involves balancing these benefits and limitations rather than ranking a single numerical characteristic as decisive.

The concentration range and processing sequence should be selected on the basis of application trials and the formulation's hazard assessment, not invented as a universal recipe. Industrial process optimization may require several candidate surfactants and properly controlled comparisons.

WHAT PROBLEMS CAN PLURAFAC LF 431 HELP ADDRESS?

Potential problems include persistent foam in mechanical cleaning, difficulty balancing grease removal with pump performance, and instability of some surfactants in strongly alkaline environments. LF 431 provides a candidate surfactant where a low-foam product profile and documented caustic tolerance are relevant. Its interfacial activity also makes it a possible component in cleaner packages designed for controlled wetting and soil dispersal.

The product should not be advertised as a universal fix for hard-water scale, corrosion, microbiological contamination, staining or rinse spots. Those phenomena may require sequestrants, corrosion inhibitors, approved disinfectants, builders or rinse-aid chemistry, together with surface-specific testing.

It is equally important to recognize problems the material may create if formulated without due consideration. A neat surfactant that does not form a clear aqueous solution can lead to haze or phase separation, while intermediate dilution may temporarily increase viscosity. Such limitations can matter as much as the benefits in a commercial liquid cleaner.

IMPORTANT CONSIDERATIONS WHEN USING PLURAFAC LF 431

Keep grade identity and source documents together. The 2023 technical family data are explicitly representative rather than guaranteed product specifications, and the 2018 U.S. SDS is a historical regional document. The most recent local SDS, delivery specification and batch COA should determine current handling, transport and release decisions.

Verify physical stability throughout the relevant temperature range. A blend that looks uniform at room temperature may cloud, thicken or separate at service temperatures or after standing. Do not assume that the end-capped alkoxylate's strong caustic-stability marketing statement establishes clear solubility in alkali.

Evaluate human exposure and environmental hazards. Concentrated Plurafac LF 431 is associated with serious eye damage and aquatic hazard classifications in the reviewed 2018 SDS, so splash controls and release prevention matter in manufacturing and bulk handling. Hazard classification of the final cleaning product must be assessed from its entire composition under the law applicable to the destination market.

Finally, avoid transferring technical values from Plurafac LF 231, LF 403 or LF 300 simply because the names resemble one another. These grades have distinguishable cloud points, viscosity and wetting/foam responses, and substitution calls for reformulation validation.

STARTING FORMULATION APPROACHES AND DEVELOPMENT TESTS

A practical development program starts by defining cleaning application, soil type, substrate, water quality, target temperature, required clarity and acceptable foam level. The next step is to compare the performance of LF 431 in a carefully controlled detergent base against an appropriate reference surfactant system. This is a testing strategy rather than a predetermined formula.

The formulation laboratory can vary surfactant package, hydrotrope choice, builder chemistry and alkalinity separately while observing physical stability. Given LF 431's limited aqueous clarity, a compatibility ladder should include the intended concentrations of water, alkaline salts, hydrotropes and other surfactants. Intermediate dilution viscosity should be recorded because the neat product's viscosity does not describe all processing stages.

Cleaning and foam results should be measured using realistic mechanical conditions and representative soils. For hot processes, testing at the operating temperature is essential in view of the product's reported slow wetting at 70 °C in the standardized test. The study should also include storage aging, temperature cycling and equipment-material compatibility.

No specific additive percentage, alkalinity target, formula recipe, processing time or validated equipment set point is supplied here, because those values were not established from the product documents and depend on the intended application.

SIMILAR PRODUCTS AND ALTERNATIVES

Other low-foaming nonionic fatty alcohol alkoxylates are the closest broad class for comparison, while higher-foaming alcohol ethoxylates, ethylene oxide/propylene oxide block copolymers and dedicated antifoams may fill other roles. The correct candidate depends on the required balance of wetting, solubility, temperature performance, cost, compatibility and regulatory profile. Chemical similarity does not establish direct one-to-one replacement.

Within the same LF family, end-capped LF 231 is a distinct grade with a representative 23 °C viscosity also around 45 mPa·s, but its cloud point values and foaming/wetting data differ. LF 403, by contrast, has a representative viscosity around 60 mPa·s in the historical literature consulted for that grade, and its individual phase and application properties should be assessed separately. Replacing one with the other solely on viscosity or a low-foam label risks unexpected clouding or process effects.

Dedicated silicone or mineral-oil antifoams may be effective in certain specialized systems but are not chemical equivalents to LF 431 as a surfactant. A formulation needing both detergency and foam suppression may require multiple ingredients, not a simple substitution of one additive.

INITIAL FORMULATION APPROACHES FOR PLURAFAC LF 431

The following examples explain how PLURAFAC LF 431 can be evaluated in formulation research and cleaning-process development. PLURAFAC LF 431 is a liquid, low-foaming, nonionic surfactant based on an end-capped fatty alcohol alkoxylate. Manufacturer information highlights the caustic stability of PLURAFAC LF 431 and identifies wetting, low-foaming and, under suitable conditions, defoaming behavior among its relevant functions. Consequently, PLURAFAC LF 431 is a candidate for alkaline cleaning systems where foam must remain controlled during circulation, spraying or mechanical agitation.

These examples are illustrative laboratory screening approaches. They are not validated commercial recipes, manufacturing instructions, guaranteed performance specifications or regulatory-approved finished formulations. Unless indicated otherwise, percentages are by weight (% w/w). Actual results depend on the supplied grade of PLURAFAC LF 431, active concentrations of other ingredients, water hardness, operating temperature, soil composition and equipment design. Consult the latest manufacturer technical data sheet and safety data sheet before conducting trials.

The end-capped structure and reported alkali tolerance of PLURAFAC LF 431 do not guarantee compatibility with every alkaline concentrate. Check clarity, phase separation, temperature-related cloudiness, viscosity, low-temperature storage stability and foam during operation. In the following screening series, the PLURAFAC LF 431 level is varied while the other ingredients and test conditions are kept constant.

EXAMPLE 1: PLURAFAC LF 431 LEVEL SCREENING IN AN ALKALINE CLEANING-IN-PLACE (CIP) SOLUTION

Objective: Investigate the effect of PLURAFAC LF 431 concentration on foam development, wetting, removal of process soils and rinseability in a caustic cleaning-in-place (CIP) working solution for compatible stainless-steel equipment.

Initial screening composition (laboratory working solution, % w/w):

PLURAFAC LF 431: approximately 0.10%, 0.25% and 0.50% in separate trials.

Sodium hydroxide aqueous solution (50% NaOH): approximately 2.00% as supplied, equivalent to approximately 1.00% active NaOH; held constant.

Sodium gluconate: approximately 0.20%, held constant.

Sodium xylene sulfonate solution or another alkali-compatible hydrotrope: approximately 1.00% as supplied, held constant.

Demineralized water: quantity sufficient to 100%.

Circulation temperature: initially approximately 30–50 °C, selected according to equipment and material limits.

Contact time, circulation rate, standardized soil loading and rinse conditions: held constant.

These amounts are preliminary working-bath levels, not a recommendation for commercial CIP operation. The caustic stability of PLURAFAC LF 431 must be checked in the final solution, especially where elevated temperature, strong electrolyte concentration or different hydrotropes are involved.

Application approach:

1. Charge a clean, chemically resistant laboratory vessel with most of the demineralized water and begin controlled agitation.

2. Slowly introduce the measured sodium hydroxide solution into the water with temperature control; allow the solution to cool if necessary.

3. Dissolve sodium gluconate and the selected alkali-compatible hydrotrope in the prepared alkaline solution.

4. Add the required PLURAFAC LF 431 quantity slowly, then add water to reach 100% of the test batch.

5. Record pH, appearance, temperature-dependent phase behavior and foam at a fixed laboratory circulation rate.

6. Circulate each PLURAFAC LF 431 solution across reproducibly soiled stainless-steel test coupons or compatible model pipework.

7. Compare removal of the selected process soil, operating foam volume, pump behavior, rinse duration and visible residues after rinsing.

8. Repeat the best-performing PLURAFAC LF 431 level at a second controlled temperature and higher soil loading to evaluate process robustness.

Sodium hydroxide can cause severe chemical burns. Use appropriately trained personnel, chemical-resistant gloves, eye and face protection, ventilation and controlled dosing. Never pour water into concentrated caustic and never mix the solution with incompatible chemicals. Verify equipment seals, material compatibility, wastewater disposal and food-processing hygiene requirements before scale-up; cleaning performance alone does not prove disinfection.

EXAMPLE 2: PLURAFAC LF 431 SCREENING IN A LOW-FOAM INDUSTRIAL SPRAY DEGREASER

Objective: Determine how PLURAFAC LF 431 affects oil removal, spray-generated foam, wetting and rinsing in an alkaline spray-wash bath for compatible industrial components.

Initial screening composition (laboratory working bath, % w/w):

PLURAFAC LF 431: approximately 0.25%, 0.50% and 0.90% in separate trials.

Sodium carbonate: approximately 0.60%, held constant.

Sodium metasilicate pentahydrate: approximately 0.40%, held constant, subject to substrate compatibility.

GLDA-based aqueous chelating agent: approximately 0.25% as supplied, held constant.

Dipropylene glycol methyl ether (DPM) or a technically suitable water-miscible solvent: approximately 1.50%, held constant.

Sodium xylene sulfonate solution or another compatible hydrotrope: approximately 1.00% as supplied, held constant.

Demineralized water: quantity sufficient to 100%.

Spray pressure, nozzle design, bath temperature, exposure time and soil load: held constant.

This example represents a diluted working bath, not a validated commercial cleaner. Do not assume that the alkaline metasilicate system is compatible with aluminum, zinc, painted surfaces, rubber seals or other sensitive substrates. PLURAFAC LF 431 performance should be assessed under the actual spray conditions because static foam tests may not reflect recirculating equipment.

Application approach:

1. Add most of the demineralized water to a suitable mixing tank and start moderate agitation.

2. Dissolve sodium carbonate and sodium metasilicate pentahydrate in a controlled sequence, checking for insoluble material.

3. Incorporate the GLDA-based chelant, compatible solvent and hydrotrope, mixing until the bath is uniform.

4. Slowly dose PLURAFAC LF 431 at the chosen concentration; complete the mixture with water to 100%.

5. Measure pH, clarity, viscosity and short-term stability at both ambient and intended operating temperatures.

6. Clean identically contaminated, weighed metal or component coupons in a laboratory spray rig using fixed nozzle and pressure settings.

7. Evaluate oil-removal performance, foam height and persistence, spray circulation behavior, residue, rinsing and any surface changes.

8. Select the PLURAFAC LF 431 concentration giving efficient degreasing with manageable foam, then retest after controlled bath contamination or repeated operating cycles.

Alkaline spray cleaners can generate irritating aerosols, while solvents and other ingredients may present additional hazards. Use appropriate enclosure, ventilation and personal protective equipment. Verify substrate corrosion, material compatibility, the safety data sheets and local wastewater regulations before industrial application.

EXAMPLE 3: PLURAFAC LF 431 FOAM-CONTROL EVALUATION IN A COMMERCIAL LAUNDRY LIQUID

Objective: Evaluate whether PLURAFAC LF 431 helps control wash and rinse foam while maintaining stain removal and fabric compatibility in an alkaline commercial laundry liquid containing a fixed alkyl polyglucoside (APG) co-surfactant level.

Initial screening composition (finished laboratory detergent, % w/w):

PLURAFAC LF 431: approximately 0.40%, 0.80% and 1.20% in separate trials.

Alkyl polyglucoside (APG) aqueous surfactant solution: approximately 1.00% as supplied, held constant.

Sodium carbonate: approximately 2.50%, held constant.

Trisodium citrate dihydrate: approximately 2.00%, held constant.

Sodium gluconate: approximately 0.35%, held constant.

Sodium xylene sulfonate solution or another compatible hydrotrope: approximately 1.50% as supplied, held constant.

Demineralized water: quantity sufficient to 100%.

Laundry load, detergent dose, wash temperature, cycle duration, water hardness and agitation: held constant.

The proposed screening concentrations only illustrate a controlled study of PLURAFAC LF 431. Any foam suppression in the selected APG system must be confirmed through measurement; the presence of PLURAFAC LF 431 does not establish a fixed surfactant synergy or guarantee suitability for all fabrics.

Application approach:

1. Charge the mixing vessel with most of the demineralized water and start moderate stirring.

2. Dissolve sodium citrate, sodium gluconate and sodium carbonate sequentially, ensuring uniformity.

3. Add the selected hydrotrope and the measured APG solution without excessive aeration.

4. Incorporate PLURAFAC LF 431 at the assigned screening concentration and complete the formulation to 100% with water.

5. Check pH, appearance, storage stability, viscosity and foam formation under standardized mechanical agitation.

6. Wash matching standardized fabric swatches with controlled sebum, oil and particulate soils using the same detergent dosage and commercial laundry conditions.

7. Compare soil-removal results, wash-stage foam, foam during rinsing, fabric residue, color changes and post-wash fabric feel.

8. Identify the PLURAFAC LF 431 level providing the best balance of low foam and cleaning performance, then verify repeated-cycle behavior and stability over the intended storage range.

Alkaline laundry ingredients may cause skin and eye irritation or injury. Wear suitable protective equipment and ensure adequate ventilation. Evaluate fabric care, dosing accuracy, packaging compatibility, effluent handling and applicable labeling or detergent regulations before finalizing a product.

QUALITY CONTROL AND PURCHASING CRITERIA

The grade name and product number are the first purchasing identifiers: request 'Plurafac LF 431' with product reference 30044045 where relevant. A technical data sheet (TDS) explains representative characteristics and intended areas of use, whereas a safety data sheet (SDS) covers hazards and safe handling, and a certificate of analysis (COA) describes batch-level tested results against agreed specifications.

Useful quality checks may include appearance, color, clarity, temperature-qualified viscosity, density, water content where specified, and a suitable identification or fingerprint test. Depending on the purchasing agreement, acid value or other impurity measures may also be relevant, but no universal numerical limits for those extra parameters are asserted here. Buyers should agree on documented acceptance criteria rather than mistake a representative family data table for a batch guarantee.

For application-sensitive projects, request supporting evaluations for foam, cloud point, wetting and alkali compatibility under methods relevant to the customer's formulation. Storage temperature history, age of the product and packaging condition can affect practical receipt inspection. Do not assume that a particular packaging size, origin, approval, certification or current stock exists without supplier confirmation.

Document version control is important: a 2023 family technical bulletin and a 2018 regional SDS answer different questions. The current SDS for the user's destination and current product status should be obtained before purchase, shipping or industrial deployment.

REGULATORY AND APPLICATION-SPECIFIC CONSIDERATIONS

Nonionic surfactant status is a chemical classification, not a government approval. The 2018 U.S. SDS states that the surfactant meets the biodegradability criteria cited in the EU Detergents Regulation (EC) No 648/2004, and reports ready biodegradability in a recognized experimental test. Such data are useful in detergent-related documentation, but the end-product producer remains responsible for all applicable labeling, ingredient and market rules.

The producer lists food-service and food and beverage processing among the sectors in which the grade may be relevant. This does not constitute approval to add the material to food or to use concentrated raw material as a direct food-contact additive. Any cleaning formulation for a food facility must satisfy relevant residue, rinsing and workplace regulations.

The word sanitation in a commercial industry category does not make the surfactant an authorized antimicrobial ingredient. Biocidal and disinfection claims require their own substantiation. Similarly, no cosmetics, pharmaceutical or medical suitability should be inferred from general surfactant chemistry.

Inventory status can differ between jurisdictions. The reviewed 2018 U.S. SDS contains market-specific statements that may be obsolete or inapplicable elsewhere; current regional regulatory confirmation should be obtained from the responsible supplier rather than extrapolating from the historical document.

FIRST AID

Inhalation
If Plurafac LF 431 is inhaled as aerosol or mist, move the affected person to fresh air and seek medical advice if exposure is significant, breathing is difficult or symptoms continue. The reviewed historical SDS contains a specific medication-related instruction that should be implemented only under appropriate professional medical guidance, not as unsupervised first aid.

Skin Contact
If Plurafac LF 431 contacts the skin, remove contaminated clothing and promptly wash the affected area thoroughly with plenty of water. Obtain medical evaluation if irritation, discomfort or injury develops, and do not reuse contaminated clothing until it has been properly cleaned.

Eye Contact
If Plurafac LF 431 enters the eyes, immediately begin continuous gentle rinsing with clean running water for at least 15 minutes, holding eyelids apart and removing contact lenses if readily possible. Obtain urgent medical assessment because the reviewed SDS identifies a risk of serious eye damage; do not delay irrigation while seeking assistance.

Ingestion
If Plurafac LF 431 is swallowed, rinse the mouth and obtain prompt medical advice; do not induce vomiting. Do not give anything by mouth to an unconscious or poorly responsive person, and follow poison-center or clinician instructions for any subsequent steps.

Note to Physicians
For Plurafac LF 431 exposure, the historical SDS advises symptomatic treatment and identifies no specific antidote. Provide the full product name, the current safety data sheet, the exposure route and the estimated amount to medical professionals.

HANDLING AND STORAGE

Handling
Handle Plurafac LF 431 as a concentrated industrial surfactant, avoiding splashes, aerosol formation and eye contact. Close containers immediately after dispensing because the product may absorb atmospheric moisture. Use appropriate transfer equipment and keep work areas free of leaks that could cause slipping.

Engineering Controls
When Plurafac LF 431 is pumped, sprayed or transferred, provide ventilation and splash containment appropriate to the operation. Design equipment to minimize aerosol exposure and to control contamination of floors, drains and nearby workspaces.

Personal Protection
During Plurafac LF 431 handling, use tightly fitting chemical goggles and chemical-resistant gloves; face protection and protective clothing should be selected according to the scale of splash risk. The reviewed SDS describes serious eye damage as a principal hazard of the concentrated product.

Respiratory Protection
For Plurafac LF 431 mist-forming processes or inadequate ventilation, assess the need for suitable respiratory protection through the workplace risk assessment. Routine low-vapor-pressure handling is not proof that aerosols cannot occur during high-pressure operations.

Storage
Store Plurafac LF 431 indoors in its original, tightly closed containers with suitable secondary containment. The family bulletin advises against storage substantially below 20 °C or overheating, while the older SDS notes the product can withstand cold or freezing without necessarily being damaged; these statements are compatible when physical clarity and ease of handling are separated from chemical deterioration.

Cold-Weather Reconditioning
If Plurafac LF 431 develops cloudiness or precipitation after cold storage, use supplier-approved controlled gentle warming and mixing rather than aggressive localized heating. The family bulletin discusses gentle warming of affected LF products to around 40–50 °C and avoiding temperatures above 50–60 °C during drum reconditioning; the older SDS warns that properties may change irreversibly above 70 °C. Confirm the current grade-specific instructions before applying heat.

Material Compatibility
For Plurafac LF 431 transfers and blends, check suitability of seals, pumps, storage vessels and associated cleaning chemicals. Its reported caustic-stability advantage does not replace a compatibility review for concentrated reactants, oxidizers, acids or other mixtures described in current safety documentation.

Spill Procedures
For spills of Plurafac LF 431, isolate the affected area, prevent slipping and keep the liquid out of drains and waterways. Use appropriate absorbents for small releases and controlled pumping for larger quantities; place recovered material into suitable labeled waste containers.

Environmental Precautions
Because the reviewed SDS classifies Plurafac LF 431 as hazardous to the aquatic environment, prevent release into surface water and sewers. Wastewater treatment and industrial discharge require site-specific evaluation and compliance with applicable permits.

Fire Response
In a Plurafac LF 431 fire, suitable media identified in the historical SDS include water spray, dry powder and foam, with a direct water jet identified as unsuitable. Firefighters should wear full protective gear and independent breathing apparatus, and contaminated fire-fighting runoff must be contained.

Waste Disposal
Dispose of Plurafac LF 431 residues, cleaning waste and empty packaging in line with current local requirements and the applicable SDS. The product's biodegradability test outcome does not justify uncontrolled disposal into soil, drains or natural water.

SAFETY, ENVIRONMENTAL AND TRANSPORT INFORMATION

The reviewed February 2018 U.S. SDS classified Plurafac LF 431 as serious eye damage category 1 and as hazardous to aquatic environments, with acute category 1 and chronic category 2 classifications. The associated hazard statements include H318, H400 and H411, with the signal word Danger. These are historical regional classifications and must be checked against the latest SDS for the actual destination market before labels are issued.

The same SDS reported a flash point above 100 °C and a vapor pressure below 0.1 hPa at 20 °C. The low vapor pressure does not eliminate aerosol exposure during spraying, and a flash point above 100 °C is not a reason to ignore ordinary fire safety controls. The product was not described as a highly volatile solvent or as a solid combustible dust.

Published older ecotoxicity values include fish LC50 of 0.1–1 mg/L over 96 hours and aquatic-invertebrate EC50 of 0.1–1 mg/L over 48 hours, under the methods noted in that SDS. The same sheet reports more than 60% theoretical carbon dioxide formation in 28 days under OECD 301B, supporting its statement that the material is readily biodegradable. Rapid biodegradation under a laboratory protocol is not the same as immediate environmental harmlessness, so aquatic release prevention remains necessary.

Transport Classification (2018 U.S. SDS, subject to current confirmation)
UN Number: UN 3082
Proper Shipping Name: ENVIRONMENTALLY HAZARDOUS SUBSTANCE, LIQUID, N.O.S. (contains FATTY ALCOHOL ALKOXYLATE)
Hazard Class: 9
Packing Group: III
USDOT: Class 9 classification in the reviewed historical SDS
IMDG: Class 9; marine pollutant indicated as YES in that SDS
IATA/ICAO: Class 9 in that SDS

Transport exemptions, package-size provisions and current national or international classification changes may alter the shipment requirements. The 2018 statement must not be copied into a shipping declaration without current SDS and logistics verification. The same principle applies to local occupational exposure controls, environmental labeling and waste classification.

FREQUENTLY ASKED QUESTIONS ABOUT PLURAFAC LF 431

What is Plurafac LF 431?
It is a liquid, low-foaming nonionic surfactant consisting of alkyl-end-capped fatty alcohol alkoxylates and intended for development of industrial and institutional cleaning systems.

What is the CAS number of Plurafac LF 431?
The current commercial product finder associates this grade with CAS 111190-40-0; confirm the exact regional identification on the supplied SDS.

What is its commercial product reference?
The relevant product reference is 30044045, which is a supplier product number rather than a chemical registry number.

Is Plurafac LF 431 an anionic surfactant?
No. Its described chemical class is nonionic; it does not have the permanent head-group charge characteristic of sulfate and sulfonate surfactants.

Is Plurafac LF 431 an end-capped alcohol alkoxylate?
Yes. The November 2023 family technical information explicitly identifies LF 431 as an alkyl-capped alcohol alkoxylate.

What is the meaning of 'fatty alcohol alkoxylate 7'?
It is the constituent descriptor used in the reviewed 2018 regional SDS, not a complete structural formula for one molecular species.

Does Plurafac LF 431 have a single molecular formula?
No. It is a distribution of alkoxylated molecules rather than a unique small compound with one exact molecular formula.

Does Plurafac LF 431 have a fixed molecular weight?
No unique grade-wide molecular weight is established by the reviewed public materials; a value would require a defined molecular distribution and measurement basis.

What is the EC number of Plurafac LF 431?
An exact grade-specific EC number was not reliably established in the reviewed primary material; request the applicable registration details from the supplier.

Is Plurafac LF 431 a solid or a liquid?
It is a liquid at 23 °C in the representative November 2023 technical data.

What color is the supplied liquid?
The product-family description and older SDS indicate a clear or slightly cloudy, colorless to yellowish liquid; batch appearance requirements should be specified separately.

What is the approximate active concentration?
The family bulletin lists approximately 100% concentration; this does not mean guaranteed analytical purity of exactly 100%.

What is the viscosity at 23 °C?
Approximately 45 mPa·s dynamic viscosity, measured using EN 12092/Brookfield LVT in representative technical data.

What is its viscosity at 10 °C?
Approximately 70 mPa·s in the corresponding Brookfield measurement reported by the producer.

What is its viscosity at 0 °C?
Approximately 120 mPa·s in the representative Brookfield test; actual pumping conditions should be evaluated separately.

What density is reported at 23 °C?
Approximately 0.96 g/cm3 under DIN 51757 in the November 2023 family technical bulletin.

Why does an older SDS report a different density?
The 2018 regional SDS quotes approximately 0.97 g/cm3 at 20 °C, a different temperature and source context from the 2023 representative value.

What is the setting point?
The representative setting point is approximately -5 °C using DIN 51583; an older regional SDS gives a nearby solidification value of about -3 °C.

What is its boiling point?
The reviewed 2018 SDS lists boiling point as not applicable; a precise pure-substance boiling temperature should not be invented for this commercial distribution.

What is its flash point?
Above 100 °C according to DIN 51758 in the reviewed 2018 regional SDS; current hazard decisions require the latest local document.

What is the cloud point by method D?
Approximately 46 °C using EN 1890 method D in the November 2023 family technical data.

What is the cloud point by method E?
Approximately 40 °C using EN 1890 method E in the same source.

Are the cloud-point figures measured in plain water?
No. Methods D and E use precisely specified butyldiglycol-containing test mixtures, so the results must not be labeled cloud points of an ordinary aqueous solution.

What does a cloud point indicate?
It indicates a change in clarity or phase behavior under a defined test and is not a universal process failure temperature.

How much foam does Plurafac LF 431 produce in the standardized test?
The representative EN 12728 result is 15 mL; foam can differ in a complete detergent blend or a recirculating machine.

Does low foam mean it always eliminates existing foam?
No. Low foaming and active defoaming are separate behaviors, and defoaming performance needs to be measured in the relevant foam-generating formulation.

Can LF 431 lower surface tension?
Yes. The published EN 14370 measurement is approximately 30 mN/m for 1 g/L surfactant in distilled water at 23 °C under the specified correction method.

What is the wetting result at 0.5 g/L and 23 °C?
Approximately 85 seconds in the EN 1772 test with distilled water containing 2 g/L soda ash.

What is the wetting result at 1 g/L and 23 °C?
Approximately 30 seconds under the same standardized conditions.

What is the wetting result at 2 g/L and 23 °C?
Approximately 15 seconds under the same standardized conditions.

What happens to its standardized wetting results at 70 °C?
All three reported test concentrations take more than 300 seconds in the published EN 1772 dataset, so higher temperature is not automatically better for wetting.

Does Plurafac LF 431 dissolve clearly in pure water?
Not in the producer's qualitative 10% at 23 °C solubility screen; formulations may require suitable co-ingredients and validation.

Is Plurafac LF 431 clearly soluble in ethanol?
Yes, at the 10% and 23 °C screening condition in the published solubility table.

Is Plurafac LF 431 clearly soluble in isopropanol?
Yes, under that qualitative 10% and 23 °C test condition.

What about mineral spirit and spindle oil?
The published 10% at 23 °C screening describes clear solubility in both of those media.

Does Plurafac LF 431 dissolve clearly in 5% sodium hydroxide solution?
Not in the producer's 10% surfactant solubility screening at 23 °C; this does not itself prove chemical instability in caustic.

How can Plurafac LF 431 resist caustic yet remain cloudy in it?
Chemical stability and clear solubility measure different things; a substance can resist chemical change while showing limited phase compatibility.

Does Plurafac LF 431 yellow when directly contacted with NaOH beads?
The current product description reports that it does not yellow under that contact, but complete formulations and longer-term stability still need testing.

Does it dissolve clearly in the tested 5% hydrochloric acid solution?
No clear solubility is recorded in the published qualitative screening at 10% surfactant and 23 °C.

Can salts influence its phase stability?
Yes. The 10% solubility screening is negative in the tested 5% salt solution, and other electrolyte levels must be assessed individually.

Does adding water always reduce viscosity?
No. The published water-addition series initially increases viscosity before falling at high water additions.

What viscosity is reported after adding 50% water?
Approximately 130 mPa·s at 23 °C in the specific manufacturer water-addition test.

Why is addition order important?
The family bulletin recommends stirring the surfactant into water because reversing the sequence may yield excessive viscosity at certain intermediate compositions.

Can Plurafac LF 431 be used in machine dishwashing?
It can be evaluated as a low-foam surfactant within a suitably validated machine dishwashing detergent; there is no universal finished-formula approval or dosage.

Can Plurafac LF 431 be used for commercial kitchen cleaning?
Food-service and kitchen hygiene are listed application areas, subject to complete-formula performance, safety and residue requirements.

Is Plurafac LF 431 suitable for CIP cleaners?
It is relevant to screening in selected cleaning-in-place formulations, but temperature, pH, solubility and foam must be tested in the actual process.

Does Plurafac LF 431 automatically disinfect surfaces?
No. It is a surfactant, not a verified stand-alone antimicrobial active, and disinfection claims require separate authorized chemistry.

Is Plurafac LF 431 approved to be added to food?
No such approval is established by its use in food and beverage processing cleaner formulations.

Can Plurafac LF 431 be evaluated in commercial laundry?
Yes, commercial laundry is a listed market, but fabric compatibility, washing effectiveness, foam and rinsing must be confirmed.

Can Plurafac LF 431 be used in institutional cleaning?
Yes, it is marketed for institutional cleaning applications as a formulation raw material rather than a finished cleaner.

Is Plurafac LF 431 a water softener?
No. It is a nonionic surfactant and does not replace builders or sequestrants used to control water hardness.

Is Plurafac LF 431 itself a corrosion inhibitor?
No verified stand-alone corrosion-inhibiting function was established; substrate protection requires separate consideration.

Is Plurafac LF 431 interchangeable with LF 231?
Not automatically. Both are end-capped LF grades, but their cloud points and application response differ.

Is Plurafac LF 431 interchangeable with LF 403?
Not automatically. The grades have distinct representative viscosities, solubility and performance behavior and require reformulation testing.

Can a conventional high-foam nonionic substitute directly?
Usually not without qualification, because foam, phase behavior and wetting could change in process equipment.

Can a silicone defoamer replace LF 431?
A dedicated defoamer serves a different primary function and may not provide the same detergency or surfactant compatibility.

How should formulation evaluation begin?
Define soils, surfaces, temperature, water quality, foam target and clarity requirements, then conduct controlled comparative performance studies.

Is there a universal starting dosage?
No manufacturer-verified universal concentration for all cleaners was established; optimize against the finished formulation.

Does Plurafac LF 431 work best at elevated temperatures?
That cannot be claimed universally, especially because the published standardized wetting tests show slow results at 70 °C.

What does the pH value of approximately 6 describe?
It is a standardized test-solution measurement, not the pH of a hypothetical pure anhydrous liquid in the conventional aqueous sense.

Can storage reduce the measured pH?
The family bulletin notes that some LF grades can show lower measured pH during storage without an observed impact on their performance.

How should containers be stored?
Store sealed, indoors and under suitable temperature conditions, following current supplier instructions to minimize moisture uptake and contamination.

Can low temperatures make it cloudy?
Yes. The family bulletin notes that cold storage can cause cloudiness and discusses controlled warming to restore processability.

Does cold clouding mean that the grade is chemically degraded?
Not necessarily. The technical bulletin says cloudiness associated with cold storage can dissipate upon appropriate gentle warming.

How hot may storage become?
The reviewed old SDS warns against temperatures above 70 °C; any warming or heated-tank conditions must follow current manufacturer instructions.

What is the most important occupational hazard?
The reviewed 2018 U.S. SDS identifies serious eye damage from the concentrated product and requires adequate eye/face protection.

Is eye exposure an emergency?
Yes. Rinse immediately for at least 15 minutes and obtain urgent professional medical attention.

What should be done after skin contact?
Remove contaminated clothing, wash promptly and thoroughly with water, and obtain medical attention if injury or irritation is present.

What should be done after swallowing it?
Rinse the mouth, do not induce vomiting, and obtain prompt medical advice; never give liquids to an unconscious person.

Does it create a slipping hazard?
Yes. The reviewed SDS specifically warns that spills can make floors slippery and require prompt containment.

Can spills be flushed to drains?
No. Prevent entry into drains, surface waters and groundwater, and manage contaminated absorbent as regulated waste.

Is Plurafac LF 431 readily biodegradable?
The reviewed SDS reports more than 60% carbon-dioxide formation over 28 days in OECD 301B and describes it as readily biodegradable.

Does biodegradability mean it is safe to release into water?
No. The reviewed SDS also identifies acute and chronic aquatic hazards, and releases must be prevented.

What is the historical transport UN number?
The reviewed 2018 U.S. SDS lists UN 3082 for environmentally hazardous liquid, N.O.S.; confirm current rules before shipment.

What was the historical transport class?
Class 9, packing group III, under the USDOT, IMDG and IATA/ICAO entries in that 2018 SDS.

Is Plurafac LF 431 a marine pollutant?
The reviewed 2018 SDS marks the material as a marine pollutant under IMDG; current shipment classification must be checked.

Is this surfactant flammable at room temperature?
The older SDS gives a flash point above 100 °C; it should not be handled as a highly volatile solvent, but normal industrial fire precautions still apply.

What does a technical data sheet provide?
It describes representative product identity and performance characteristics; it is not automatically a contractual batch specification.

What does the SDS provide?
The safety data sheet describes hazards, first aid, handling, environmental precautions and applicable transport details for its stated region and revision.

Why is a certificate of analysis needed?
A COA documents the tests and results for a specific lot against agreed release specifications.

Is the grade's exact shelf life known from the reviewed sources?
No fixed shelf-life period was reliably established; obtain current product-specific storage-life information from the supplier.

Can the supplier guarantee current stock or certifications from this profile?
No. Availability, certification, packaging, origin and documentation must be checked directly for the intended order.

What details help when requesting a quotation?
Provide the product name, requested quantity, destination, packaging needs, intended use and any essential technical or documentation requirements.

TECHNICAL SUMMARY

Plurafac LF 431 is an alkyl-end-capped fatty alcohol alkoxylate delivered as an approximately 100%-concentration liquid nonionic surfactant. It combines a representative viscosity around 45 mPa·s at 23 °C, low foam in a standardized test and a supplier-described advantage in caustic stability. The current product CAS record is 111190-40-0, while product reference 30044045 is a useful commercial identifier.

The practical strengths of Plurafac LF 431 require balanced interpretation. The grade lowers surface tension and can support selected detergent systems, but the manufacturer also reports no clear solubility at 10% in plain water, temperature-sensitive wetting behavior and nonmonotonic viscosity during water addition. Effective formulation work must therefore cover solubilization, process temperatures, foam under realistic conditions, compatibility and storage stability.

Handling should reflect the risk of serious eye damage and aquatic hazard classification reported in the reviewed historical SDS. Current regional documentation and batch-specific quality requirements remain essential, particularly for shipping, labeling and commercial purchase decisions.

CONTACT ATAMAN KIMYA

Customers considering Plurafac LF 431 for industrial cleaning, food-service hygiene, commercial laundry or other suitable surfactant formulations may contact Ataman Kimya to discuss the intended application and the technical performance characteristics that matter most. Relevant topics can include grade identity, current technical and safety documents, suitable packaging, minimum order requirements, current availability and a quotation.

For procurement or laboratory evaluation, provide the destination market, expected application conditions, required specification and approximate quantity so that suitability and documentation can be checked. Commercial availability, certifications and particular packaging options should be confirmed directly rather than assumed.

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