1-OCTADECANOL (STEARYL ALCOHOL)

1-Octadecanol (Stearyl Alcohol) is a saturated long-chain primary fatty alcohol containing eighteen carbon atoms.

1-Octadecanol (Stearyl Alcohol) is a wax-like solid used as a consistency modifier, emollient, co-emulsifier, lubricant, and chemical intermediate.

1-Octadecanol (Stearyl Alcohol) is used in cosmetics, pharmaceutical formulations, coatings, inks, textiles, lubricants, plastics, rubber, waxes, and specialty chemical synthesis.

CAS Number: 112-92-5

EC Number: 204-017-6

Molecular Formula: C₁₈H₃₈O

Molecular Weight: 270.49 g/mol

SYNONYMS

1-Octadecanol (Stearyl Alcohol), 1-Octadecanol, Stearyl Alcohol, Octadecan-1-ol, Octadecyl Alcohol, n-Octadecanol, n-Octadecyl Alcohol, n-1-Octadecanol, 1-Hydroxyoctadecane, Octadecanol, Stearic Alcohol, Stearol, C18 Alcohol, Alcohol C18, C18 Fatty Alcohol, Fatty Alcohol C18, Linear C18 Alcohol, Linear Fatty Alcohol C18, Straight-Chain C18 Alcohol, Straight-Chain Octadecanol, Normal Octadecanol, Saturated C18 Alcohol, Saturated Fatty Alcohol C18, Primary C18 Alcohol, Primary Fatty Alcohol C18, Long-Chain Fatty Alcohol, Long-Chain Primary Alcohol, Saturated Long-Chain Fatty Alcohol, Wax-Like C18 Alcohol, C18 Linear Fatty Alcohol, Hydrogenated C18 Fatty Alcohol, 1-Octadecanol Fatty Alcohol, 1-Octadecanol Wax, 1-Octadecanol Flakes, 1-Octadecanol Beads, 1-Octadecanol Pellets, 1-Octadecanol Powder, Stearyl Alcohol Flakes, Stearyl Alcohol Beads, Stearyl Alcohol Pellets, Stearyl Alcohol Powder, High-Purity 1-Octadecanol, Cosmetic-Grade Stearyl Alcohol, Pharmaceutical-Grade Stearyl Alcohol, Technical-Grade Stearyl Alcohol, Stearyl Alcohol NF, Stearyl Alcohol USP, Octadecanol NF, Synthetic Stearyl Alcohol, Vegetable-Derived Stearyl Alcohol, CAS 112-92-5, EC 204-017-6, EINECS 204-017-6, PubChem CID 8221, C₁₈H₃₈O, CH₃(CH₂)₁₇OH

APPLICATIONS

1-Octadecanol (Stearyl Alcohol) serves as a consistency modifier in cosmetic creams and lotions containing compatible oil and water phases.
1-Octadecanol (Stearyl Alcohol) increases body, improves texture, and supports the formation of stable semisolid emulsions.

1-Octadecanol (Stearyl Alcohol) functions as a co-emulsifier in oil-in-water and water-in-oil personal-care formulations.
1-Octadecanol (Stearyl Alcohol) strengthens interfacial films when combined with suitable primary emulsifiers, surfactants, and stabilizing polymers.

1-Octadecanol (Stearyl Alcohol) contributes emollient properties to skin creams, body lotions, hand-care products, and moisturizing formulations.
1-Octadecanol (Stearyl Alcohol) helps produce a smooth and substantive sensory film without behaving like a volatile short-chain alcohol.

1-Octadecanol (Stearyl Alcohol) supports pharmaceutical creams and ointments as a structuring and consistency-adjusting excipient.
1-Octadecanol (Stearyl Alcohol) must comply with the applicable compendial, purity, microbial-quality, and finished-product requirements before pharmaceutical use.

1-Octadecanol (Stearyl Alcohol) functions in hair conditioners requiring viscosity, creamy texture, and improved deposition of conditioning ingredients.
1-Octadecanol (Stearyl Alcohol) can interact with compatible cationic surfactants to form structured lamellar phases within conditioner formulations.

1-Octadecanol (Stearyl Alcohol) contributes to shampoos and cleansing products requiring increased viscosity and a richer sensory profile.
1-Octadecanol (Stearyl Alcohol) should be balanced with the surfactant system to prevent waxy deposits, poor clarity, or excessive product thickness.

1-Octadecanol (Stearyl Alcohol) supports facial cleansers, cleansing creams, and makeup-removal formulations requiring stable oil-phase structure.
1-Octadecanol (Stearyl Alcohol) assists controlled spreading while compatible surfactants and emulsifiers govern rinsing and soil removal.

1-Octadecanol (Stearyl Alcohol) functions in deodorant sticks, antiperspirant sticks, and solid personal-care formats as a structuring component.
1-Octadecanol (Stearyl Alcohol) can modify hardness, glide, payoff, melting behavior, and resistance to deformation during storage.

1-Octadecanol (Stearyl Alcohol) contributes to sunscreen and color-cosmetic emulsions requiring body and oil-phase consistency.
1-Octadecanol (Stearyl Alcohol) must be tested for compatibility with ultraviolet filters, pigments, dispersants, preservatives, and packaging materials.

1-Octadecanol (Stearyl Alcohol) supports lipsticks, balms, pomades, and other anhydrous products requiring wax-like structure.
1-Octadecanol (Stearyl Alcohol) can modify firmness, application glide, thermal stability, crystallization, and surface appearance.

1-Octadecanol (Stearyl Alcohol) serves as a raw material for manufacturing nonionic ethoxylated surfactants.
1-Octadecanol (Stearyl Alcohol) can be converted into stearyl ethoxylates with wetting, emulsifying, dispersing, or solubilizing properties.

1-Octadecanol (Stearyl Alcohol) functions as a chemical intermediate for producing fatty-alcohol esters.
1-Octadecanol (Stearyl Alcohol) can react with suitable fatty acids or other carboxylic acids to create waxes, emollients, lubricants, and phase-change compounds.

1-Octadecanol (Stearyl Alcohol) contributes to the production of sulfate, phosphate, and other functional fatty-alcohol derivatives.
1-Octadecanol (Stearyl Alcohol) provides a linear C18 hydrophobic chain that can be incorporated into surface-active molecules.

1-Octadecanol (Stearyl Alcohol) supports textile oils, fiber-processing lubricants, and finishing compositions.
1-Octadecanol (Stearyl Alcohol) can reduce friction, modify hand feel, improve processing, and provide hydrophobic surface character.

1-Octadecanol (Stearyl Alcohol) can be evaluated in leather-finishing and conditioning systems requiring waxy lubrication and surface modification.
1-Octadecanol (Stearyl Alcohol) suitability depends on penetration, flexibility, color, adhesion, polishing, water resistance, and finishing chemistry.

1-Octadecanol (Stearyl Alcohol) functions as an antifoam component or antifoam intermediate in selected industrial formulations.
1-Octadecanol (Stearyl Alcohol) can destabilize foam films when particle state, dispersion, temperature, carrier, and dosage are appropriate.

1-Octadecanol (Stearyl Alcohol) contributes lubricating and friction-reducing properties to compatible industrial processing systems.
1-Octadecanol (Stearyl Alcohol) can improve slip, mold release, surface feel, and movement between contacting materials.

1-Octadecanol (Stearyl Alcohol) supports wax blends used in polishes for furniture, footwear, metal, automotive, and household surfaces.
1-Octadecanol (Stearyl Alcohol) can modify hardness, application consistency, film formation, gloss development, and buffing behavior.

1-Octadecanol (Stearyl Alcohol) functions in coatings as a wax-like surface modifier and chemical intermediate.
1-Octadecanol (Stearyl Alcohol) can influence slip, blocking resistance, flow, gloss, water resistance, and surface feel after compatibility testing.

1-Octadecanol (Stearyl Alcohol) contributes to printing-ink formulations requiring wax structure, rub resistance, slip, or controlled rheology.
1-Octadecanol (Stearyl Alcohol) must be evaluated for pigment wetting, drying, gloss, print adhesion, blocking, and recoating behavior.

1-Octadecanol (Stearyl Alcohol) can be evaluated in hot-melt adhesives and wax-rich adhesive formulations.
1-Octadecanol (Stearyl Alcohol) can modify melt viscosity, crystallization, open time, set speed, hardness, and thermal response.

1-Octadecanol (Stearyl Alcohol) functions as a lubricant and processing aid in selected plastics and polymer compounds.
1-Octadecanol (Stearyl Alcohol) can support melt processing, filler dispersion, mold release, and surface-slip development when polymer compatibility is adequate.

1-Octadecanol (Stearyl Alcohol) contributes to rubber-processing formulations requiring lubrication, dispersion assistance, or surface modification.
1-Octadecanol (Stearyl Alcohol) should be assessed for effects on vulcanization, mechanical properties, blooming, adhesion, and aging.

1-Octadecanol (Stearyl Alcohol) serves as an intermediate in resin, polymer, and specialty-additive synthesis.
1-Octadecanol (Stearyl Alcohol) introduces a long hydrophobic alkyl chain and one reactive primary hydroxyl group into compatible chemical structures.

1-Octadecanol (Stearyl Alcohol) supports research into organic phase-change materials and thermal-energy-storage compositions.
1-Octadecanol (Stearyl Alcohol) and its fatty-acid esters can be evaluated for melting behavior, latent heat, crystallization, thermal cycling, and material compatibility.

DESCRIPTION

1-Octadecanol (Stearyl Alcohol) is a straight-chain saturated aliphatic alcohol containing eighteen carbon atoms.
1-Octadecanol (Stearyl Alcohol) carries one primary hydroxyl group at the terminal carbon of an unbranched hydrocarbon chain.

1-Octadecanol (Stearyl Alcohol) has the molecular formula C₁₈H₃₈O and a molecular weight of approximately 270.49 g/mol.
1-Octadecanol (Stearyl Alcohol) is identified by CAS Number 112-92-5 and EC Number 204-017-6.

1-Octadecanol (Stearyl Alcohol) belongs to the chemical class of long-chain primary fatty alcohols.
1-Octadecanol (Stearyl Alcohol) should not be confused with stearic acid, which contains a carboxylic acid group rather than an alcohol group.

1-Octadecanol (Stearyl Alcohol) normally appears as a colorless to white waxy, crystalline, or paraffin-like solid.
1-Octadecanol (Stearyl Alcohol) can be supplied as flakes, beads, pellets, granules, powder, or molten bulk material.

1-Octadecanol (Stearyl Alcohol) has a melting point commonly reported near 59–60°C for sufficiently pure material.
1-Octadecanol (Stearyl Alcohol) commercial melting behavior can vary with purity and the presence of cetyl alcohol or other fatty-alcohol homologues.

1-Octadecanol (Stearyl Alcohol) is essentially insoluble in water because its long hydrocarbon chain dominates its solution behavior.
1-Octadecanol (Stearyl Alcohol) is soluble or dispersible in selected heated oils and compatible organic solvents.

1-Octadecanol (Stearyl Alcohol) exhibits very low vapor pressure at ordinary room temperature.
1-Octadecanol (Stearyl Alcohol) can nevertheless generate fumes or decomposition products when heated excessively.

1-Octadecanol (Stearyl Alcohol) has a hydrophilic hydroxyl head and a strongly hydrophobic C18 hydrocarbon chain.
1-Octadecanol (Stearyl Alcohol) therefore behaves as an amphiphilic ingredient while remaining predominantly oil soluble.

1-Octadecanol (Stearyl Alcohol) increases viscosity by crystallizing and organizing within compatible oil phases and emulsions.
1-Octadecanol (Stearyl Alcohol) can form lamellar structures with emulsifiers, water, surfactants, and other fatty ingredients.

1-Octadecanol (Stearyl Alcohol) is often combined with cetyl alcohol, cetearyl alcohol, glyceryl esters, or nonionic emulsifiers.
1-Octadecanol (Stearyl Alcohol) performance depends on the complete fatty-alcohol distribution rather than only the nominal C18 content.

1-Octadecanol (Stearyl Alcohol) can be manufactured from natural fatty feedstocks or synthetic linear-alcohol processes.
1-Octadecanol (Stearyl Alcohol) source does not by itself establish pharmaceutical, cosmetic, food-contact, or sustainability compliance.

1-Octadecanol (Stearyl Alcohol) quality is commonly controlled through assay, hydroxyl value, acid value, melting range, color, moisture, and homolog distribution.
1-Octadecanol (Stearyl Alcohol) exact acceptance limits vary between cosmetic, pharmaceutical, analytical, and technical grades.

1-Octadecanol (Stearyl Alcohol) is generally stable when stored dry and protected from excessive heat and oxidizing agents.
1-Octadecanol (Stearyl Alcohol) can oxidize, discolor, or develop odor changes during prolonged unsuitable storage.

PROPERTIES

Chemical Name: Octadecan-1-ol

Chemical Class: Long-Chain Primary Fatty Alcohol

CAS Number: 112-92-5

EC Number: 204-017-6

Molecular Formula: C₁₈H₃₈O

Molecular Weight: 270.49 g/mol

Physical Form: Waxy Crystalline Solid

Appearance: Colorless to White Flakes, Beads, Pellets, or Powder

Melting Point: Commonly Approximately 59–60°C

Water Solubility: Practically Insoluble

Density in Molten Form: Approximately 0.81 g/cm³ near 59°C

Flash Point: Reported Values Are Approximately 170–200°C, Method Dependent

Primary Functions: Emollient, Consistency Modifier, Co-Emulsifier, Lubricant, and Chemical Intermediate

Main Uses: Cosmetics, Pharmaceuticals, Coatings, Inks, Textiles, Lubricants, Plastics, Rubber, and Waxes

Storage: Cool, Dry, Tightly Closed, and Protected from Heat and Oxidizing Agents

FIRST AID

Inhalation

Move the person exposed to 1-Octadecanol (Stearyl Alcohol) dust, mist, or heated fumes into fresh air.
Obtain medical attention if 1-Octadecanol (Stearyl Alcohol) exposure causes persistent coughing, respiratory irritation, wheezing, or breathing difficulty.

Skin Contact

Wash skin contaminated with 1-Octadecanol (Stearyl Alcohol) thoroughly using soap and water.
Cool skin exposed to molten 1-Octadecanol (Stearyl Alcohol) with water and obtain medical attention for persistent irritation or thermal burns.

Eye Contact

Immediately rinse eyes exposed to 1-Octadecanol (Stearyl Alcohol) with clean running water for at least 15 minutes.
Remove contact lenses when easy to do and obtain medical attention if 1-Octadecanol (Stearyl Alcohol) irritation, pain, redness, or visual disturbance persists.

Ingestion

Rinse the mouth after accidental ingestion of 1-Octadecanol (Stearyl Alcohol) and do not induce vomiting unless instructed by medical personnel.
Obtain medical advice after significant 1-Octadecanol (Stearyl Alcohol) ingestion or whenever gastrointestinal symptoms develop.

Note to Physicians

Treat 1-Octadecanol (Stearyl Alcohol) exposure symptomatically and provide appropriate supportive care.
Assess 1-Octadecanol (Stearyl Alcohol) exposure according to grade, physical form, temperature, quantity, route, symptoms, and the current Safety Data Sheet.

HANDLING AND STORAGE

Handling

Handle 1-Octadecanol (Stearyl Alcohol) using methods that minimize dust generation and uncontrolled contact with molten material.
Keep 1-Octadecanol (Stearyl Alcohol) away from strong oxidizing agents, excessive heat, open flames, food, drink, and incompatible chemicals.

Ventilation

Provide effective general ventilation and local dust extraction wherever powdered 1-Octadecanol (Stearyl Alcohol) is transferred or mixed.
Provide local exhaust where 1-Octadecanol (Stearyl Alcohol) is heated to control fumes and thermal decomposition products.

Storage

Store 1-Octadecanol (Stearyl Alcohol) in tightly closed containers within a cool, dry, and well-ventilated area.
Protect 1-Octadecanol (Stearyl Alcohol) from direct sunlight, excessive heat, humidity, contamination, and strong oxidizing agents.

Spill and Leak Procedures

Collect spilled solid 1-Octadecanol (Stearyl Alcohol) using vacuum equipment or another method that minimizes airborne dust.
Allow molten 1-Octadecanol (Stearyl Alcohol) to cool before collection and prevent 1-Octadecanol (Stearyl Alcohol) from entering drains or surface water.

Handling Precautions

Wear suitable gloves, protective clothing, and safety goggles while handling 1-Octadecanol (Stearyl Alcohol).
Use heat-resistant gloves, face protection, dust controls, and the current grade-specific Safety Data Sheet during heated 1-Octadecanol (Stearyl Alcohol) processing.