STEARYL ALCOHOL COSMETIC GRADE

Compliant with European Union Cosmetics Regulation EC No 1223/2009, United States Cosmetic Ingredient Review safety standards, and United States Pharmacopeia and European Pharmacopoeia compendial monographs, Stearyl Alcohol Cosmetic Grade also satisfies clean-beauty, Vegan, Cruelty-Free, Halal, Kosher, and RSPO sustainable palm criteria. Available from Ataman Kimya in moisture-barrier 20 kg and 25 kg polyethylene-lined bags and cartons, Stearyl Alcohol Cosmetic Grade provides cosmetic chemists and contract manufacturers with consistent batch-to-batch crystal polymorphism, rapid melt incorporation, and long-term emulsion stability.

CAS Number: 112-92-5
EC Number: 204-017-6 (EINECS 204-017-6)
Molecular Formula: C18H38O (Condensed Structural Formula: CH3(CH2)16CH2OH or CH3(CH2)17OH)
Molecular Weight: 270.49 g/mol (Exact Monoisotopic Mass: 270.2923 g/mol)
INCI Name: STEARYL ALCOHOL
E Number: Not Applicable for topical cosmetic grade (Official Cosmetic Ingredient under EU Regulation EC No 1223/2009 CosIng Ref No 38262; Compendial USP-NF and Ph. Eur. Alcohol stearylicus Excipient; US FDA 21 CFR 172.864)
Melting Point: 56.0 °C to 60.0 °C (132.8 °F to 140.0 °F; Solidification / Congealing Titer Point: 55.5 °C to 58.5 °C / 131.9 °F to 137.3 °F)
Boiling Point: 335.0 °C to 350.0 °C (635.0 °F to 662.0 °F) at 101.3 kPa atmospheric pressure; 210.0 °C (410.0 °F) at 2.0 kPa (15 mmHg) reduced pressure (Flash Point Closed Cup: ~185.0 °C to 195.0 °C)
Viscosity: Not Applicable as a solid waxy pastille or flake at 20 °C; in the molten liquid state, dynamic viscosity is approximately 9.5 to 11.5 mPa.s (cP) at 60 °C, 6.8 mPa.s at 75 °C, and 4.4 mPa.s at 100 °C (Kinematic Viscosity ~12.0 mm2/s at 60 °C)
Density: True solid crystal density of 0.880 to 0.910 g/cm3 at 20 °C; molten liquid density of 0.805 to 0.815 g/cm3 (typically 0.812 g/cm3) at 60 °C (ISO 6883); apparent loose bulk density of 470 to 550 kg/m3 (0.47 to 0.55 g/cm3) for cosmetic pastilles and flakes

Most Frequently Encountered Synonyms:
Stearyl Alcohol Cosmetic Grade
STEARYL ALCOHOL COSMETIC GRADE
Cosmetic Grade Stearyl Alcohol
Stearyl Alcohol (Cosmetic Grade)
INCI STEARYL ALCOHOL
Personal Care Grade Stearyl Alcohol
Dermo-Cosmetic Grade Stearyl Alcohol
Vegetable Stearyl Alcohol Cosmetic Grade
Plant-Derived Stearyl Alcohol (C18)
Cosmetic 1-Octadecanol
Cosmetic Octadecan-1-ol
n-Octadecyl Alcohol Cosmetic Grade
C18 Linear Fatty Alcohol (Cosmetic Grade)
Deodorized Stearyl Alcohol Pastilles
Cosmetic Stearyl Alcohol Flakes
CosIng Ref No 38262 (STEARYL ALCOHOL)
UNII-2KR89I4H1Y
CAS 112-92-5
EC 204-017-6

PRODUCT OVERVIEW, COSMETIC IDENTITY AND AMPHIPHILIC OLEOCHEMICAL ARCHITECTURE

Stearyl Alcohol Cosmetic Grade—registered globally under CAS Number 112-92-5 and European Community (EC / EINECS) Number 204-017-6, with European Commission CosIng Reference Number 38262, FDA UNII Code 2KR89I4H1Y, and mandatory International Nomenclature of Cosmetic Ingredients (INCI) label name STEARYL ALCOHOL—is a refined, steam-deodorized, 100 percent saturated C18 linear primary fatty alcohol (molecular formula C18H38O, molecular weight 270.49 g/mol) engineered specifically for skin care, hair conditioning, color cosmetics, sun care, and underarm antiperspirant formulations. Recognized across international cosmetic laboratories and personal-care supply chains under its synonyms Cosmetic Grade Stearyl Alcohol, Vegetable 1-Octadecanol, Cosmetic Octadecan-1-ol, Personal Care C18 Fatty Alcohol, and in Turkish cosmetic manufacturing as Kozmetik Kalite Stearil Alkol or Bitkisel Stearil Alkol, this snow-white waxy solid is supplied by Ataman Kimya in uniform, free-flowing pastilles (hemispherical beads) and flakes.
Why Cosmetic Formulators Require Dedicated Stearyl Alcohol Cosmetic Grade Over Standard Technical Grades:
While general industrial grades of 1-Octadecanol may contain trace residual aldehydes, ketones (high carbonyl values > 150 ppm), short-chain C12–C14 alcohol tails that irritate skin, or trace transition-metal catalyst residues that discolor delicate fragrances, Stearyl Alcohol Cosmetic Grade supplied by Ataman Kimya undergoes secondary high-vacuum fractional rectification and nitrogen/steam deodorization to meet stringent dermo-cosmetic criteria:

 Ultra-Low Odor and Low Carbonyl Value (<= 30 to 60 ppm): Eliminates fatty/tallow background notes so unscented hypoallergenic baby lotions, sensitive-skin dermo-cosmetics, and fine-fragrance body creams retain complete olfactory purity.

 Narrow C18 Homologue Purity (C18 >= 95.0% to 98.5%+ with C12/C14 <= 0.2%): Removing shorter-chain lauryl (C12) and myristyl (C14) alcohols eliminates epidermal barrier disruption and stinging on compromised or rosacea-prone skin while ensuring a crisp, predictable 56.0 °C to 60.0 °C melting profile.

 Zero Unsaturation (Iodine Value <= 0.3 to 0.8 g I2/100 g) and Water-White Melt Color (<= 10 APHA): Ensures that bright-white creams, SPF lotions, and clear-gel or white-solid deodorant sticks never turn yellow or develop rancid malondialdehyde odors during accelerated stability testing (40 °C / 75% RH for 6 months) or UV exposure.

 Eight Official EU CosIng Cosmetic Functions: Under the European Commission CosIng database, Stearyl Alcohol Cosmetic Grade (INCI: STEARYL ALCOHOL) is officially recognized for eight distinct functional roles in personal care:
- Emollient: Softens, smooths, and lubricates the stratum corneum with a velvety, dry, non-oily skin feel.
- Emulsion Stabilising: Forms viscoelastic liquid-crystalline lamellar gel networks that prevent oil/water phase separation, creaming, and coalescence.
- Viscosity Controlling: Builds pseudoplastic (shear-thinning) body in O/W and W/O creams, lotions, and hair masks, and acts as the primary structural wax gellant in anhydrous sticks.
- Foam Boosting: Stabilizes and enriches lather cushion in cream shampoos, facial cleansers, and shaving creams.
- Opacifying: Imparts rich, pearlescent-white visual opacity to lotions and cream rinses.
- Refatting: Replenishes protective surface lipids on hair cuticles and washed skin.
- Surfactant (Co-Emulsifier): Works synergistically alongside hydrophilic primary emulsifiers at the oil-water interface.
- Masking: Reduces or inhibits basic odor or taste of active cosmetic raw materials.

 Critical Distinction for Clean-Beauty Consumers ("Fatty Alcohol" vs. "Drying Alcohol"):
Cosmetic brands frequently highlight that Stearyl Alcohol Cosmetic Grade is a "Good / Moisturizing Fatty Alcohol." Unlike short-chain volatile alcohols (such as Alcohol Denat., Ethanol, or Isopropyl Alcohol, which evaporate rapidly, disrupt the skin barrier, and cause dryness), Stearyl Alcohol Cosmetic Grade is a non-volatile, high-molecular-weight plant lipid derivative that mimics the long-chain ceramides and fatty acids naturally present in healthy human skin barrier lamellae.

PHYSICAL AND CHEMICAL PROPERTIES AND QUANTITATIVE COSMETIC SPECIFICATIONS

Every batch of Stearyl Alcohol Cosmetic Grade (CAS 112-92-5, EC 204-017-6, INCI: STEARYL ALCOHOL) supplied by Ataman Kimya is accompanied by a batch-specific Certificate of Analysis (COA) verified against ISO, AOCS, ASTM, and USP-NF / Ph. Eur. analytical methods:

 Carbon Chain-Length Distribution (Capillary Gas Chromatography of Fatty Alcohols per ISO 6800 / ASTM D1983):
Ataman Kimya supplies Stearyl Alcohol Cosmetic Grade in two tailored C18 purity tiers to match specific formulation needs:
- Cosmetic & Compendial 95% Grade (Stearyl Alcohol C18-95 / S95 Cosmetic Grade):
  - C14 and Shorter (1-Tetradecanol / Myristyl Alcohol): <= 0.3 percent w/w (typical < 0.1 percent).
  - C16 (1-Hexadecanol / Cetyl Alcohol): 1.0 percent to 4.0 percent w/w (typical: 1.8 percent to 3.0 percent w/w).
  - C18 (1-Octadecanol / Stearyl Alcohol): >= 95.0 percent to 97.5 percent w/w (exceeding USP-NF and Ph. Eur. minimum of >= 95.0 percent C18H38O).
  - C20 (1-Eicosanol / Arachidyl Alcohol): <= 1.5 percent w/w (typical: 0.4 percent to 1.0 percent w/w).
- Ultra-Pure 98%+ Cosmetic & Antiperspirant Grade (Stearyl Alcohol C18-98 / 1898 Cosmetic Grade):
  - C14 and Shorter (<= C14): <= 0.1 percent w/w (virtually zero).
  - C16 (1-Hexadecanol): <= 1.0 percent to 1.5 percent w/w (typical: 0.4 percent to 0.9 percent w/w).
  - C18 (1-Octadecanol): >= 98.0 percent to 99.2 percent w/w.
  - C20 (1-Eicosanol): <= 0.8 percent w/w; Hydrocarbon Content: <= 0.3 percent w/w.

 Quantitative Wet-Chemical Specifications for Cosmetic Grade:
- Hydroxyl Value (ISO 4326 / AOCS Cd 13-60 / USP <401>): 200.0 to 215.0 mg KOH/g (typical range for C18-98 Cosmetic Grade: 204.0 to 209.5 mg KOH/g; theoretical value for 100% pure C18H38O = 207.42 mg KOH/g).
- Acid Value (Free Fatty Acid Content, ISO 660 / USP <401>): <= 0.10 to 0.30 mg KOH/g (typical cosmetic batch value: <= 0.05 mg KOH/g; USP-NF / Ph. Eur. limit <= 1.0 mg KOH/g).
- Saponification Value / Ester Value (ISO 3657 / USP <401>): <= 0.50 mg KOH/g (typical cosmetic batch value: 0.10 to 0.30 mg KOH/g; Ph. Eur. limit <= 2.0 mg KOH/g).
- Iodine Value (Wijs Method, ISO 3961 / AOCS Tg 1a-64): <= 0.50 to 1.00 g I2/100 g (typical cosmetic batch value: 0.05 to 0.25 g I2/100 g).
- Carbonyl Value (Trace Aldehydes/Ketones, ASTM E411): <= 30 to 60 mg/kg (ppm as C=O), guaranteeing odorless cosmetic performance.
- Moisture / Water Content (Karl Fischer, ISO 8534 / ASTM E203): <= 0.10 percent w/w (typical: 0.03 percent to 0.07 percent w/w).

 Physical, Thermal, Optical, HLB, and Purity Constants:
- Visual Appearance and Sensory Odor at 20 °C: Bright snow-white, uniform, dust-free waxy pastilles (3 to 5 mm beads) or crisp flakes with a neutral, clean, nearly odorless profile; melts at 60 °C into a water-white, crystal-clear transparent liquid.
- Molten Color on Pt-Co (APHA / Hazen) Scale at 65 °C (ASTM D1209 / ISO 6271): <= 10 to 15 APHA units (typical: 5 to 8 APHA).
- Slip Melting Point / Capillary Melting Range (ISO 6321 / USP <741>): 56.0 °C to 60.0 °C (132.8 °F to 140.0 °F; Ph. Eur. range: 57.0 °C to 60.0 °C).
- Solidification Point / Titer (ASTM D1493 / AOCS Cc 12-59): 55.5 °C to 58.5 °C (131.9 °F to 137.3 °F).
- Required HLB (Hydrophile-Lipophile Balance for O/W Emulsification): Required HLB = 15.0 to 15.5; Effective HLB of Stearyl Alcohol itself as a lipophilic amphiphile = ~1.2 to 1.5.
- Cosmetic Comedogenicity & Irritation Rating: Comedogenicity Score = 0 to 1 (non-comedogenic in standard cosmetic use levels of 1% to 6%); Primary Skin Irritation Index (PII) = 0.0.

- Density and Bulk Density: Solid density at 20 °C = 0.880 to 0.910 g/cm3; Molten liquid density at 60 °C = 0.808 to 0.815 g/cm3 (0.812 g/cm3 typical); Apparent loose bulk density of pastilles = 470 to 540 g/L (kg/m3).
- Molten Dynamic Viscosity (Brookfield Thermosel): ~10.2 mPa.s (cP) at 60 °C, ~6.8 mPa.s at 75 °C, and ~5.2 mPa.s at 85 °C; Refractive Index (nD60) = 1.4350 to 1.4362 at 60 °C.
- Flash Point & Volatility: Closed-Cup Flash Point (ASTM D93) ~185 °C to 195 °C; Vapor Pressure < 0.001 Pa at 20 °C (100% non-volatile VOC-free cosmetic ingredient).
- Solubility in Cosmetic Vehicles: Practically insoluble in water (< 0.001 mg/L) and insoluble in glycerin, propylene glycol, and 1,3-butylene glycol; soluble in warm ethanol (96%) and isopropyl alcohol; freely miscible in molten cosmetic oils and esters including Caprylic/Capric Triglyceride (MCT), Isopropyl Myristate (IPM), Isopropyl Palmitate (IPP), C12-15 Alkyl Benzoate, Dicaprylyl Carbonate, Coco-Caprylate/Caprate, Jojoba Oil, Sweet Almond Oil, Shea Butter, Mineral Oil, Squalane, and Cyclopentasiloxane / Dimethicone fluids.
- Heavy Metal & Microbiological Purity (EU 1223/2009 & USP-NF Compliance): Lead (Pb) <= 1.0 mg/kg; Arsenic (As) <= 1.0 mg/kg; Mercury (Hg) <= 0.1 mg/kg; Cadmium (Cd) <= 0.5 mg/kg; Nickel (Ni) <= 1.0 mg/kg; 1,4-Dioxane & Ethylene Oxide = 0.0 ppm (Absent); Total Aerobic Microbial Count (TAMC) < 10 CFU/g; Total Combined Yeasts & Molds (TYMC) < 10 CFU/g.

LAMELLAR LIQUID-CRYSTALLINE GEL-NETWORK (LGN) ENGINEERING IN EMULSIONS AND CONDITIONERS

In modern cosmetic physical chemistry, Stearyl Alcohol Cosmetic Grade (INCI: STEARYL ALCOHOL) is not merely a passive wax thickener—it is the structural building block of the Lamellar Liquid-Crystalline Gel Network (LGN, also called the alpha-crystalline gel phase or L-beta phase) that governs the viscosity, stability, skin-barrier mimicry, and sensory glide of O/W creams, lotions, and hair conditioners:

 The Four-Phase Colloidal Model of Cosmetic Creams and Conditioners:
When a cosmetic chemist formulates an oil-in-water emulsion or hair conditioner using 2.0 percent to 6.0 percent w/w of Stearyl Alcohol Cosmetic Grade alongside 0.5 percent to 2.5 percent w/w of a hydrophilic surfactant (nonionic such as Ceteareth-20, Steareth-21, Polyglyceryl-3 Methylglucose Distearate, or Sorbitan Stearate/Polysorbate 60; anionic such as Sodium Stearoyl Glutamate, Potassium Cetyl Phosphate, or Sodium Cetearyl Sulfate; or cationic such as Behentrimonium Chloride or Cetrimonium Chloride), only ~10 percent to 20 percent of the surfactant and fatty alcohol is needed to coat the dispersed oil droplets. The remaining 80 percent to 90 percent of Stearyl Alcohol Cosmetic Grade and surfactant self-assembles in the continuous aqueous phase into multi-lamellar bilayers:
- Above the Chain-Melting Transition Temperature (Tm ~55 °C to 58 °C during hot emulsification at 70 °C–75 °C): The C18 alkyl tails of Stearyl Alcohol Cosmetic Grade are in a disordered liquid-crystalline state (L-alpha phase), allowing easy low-viscosity homogenization.
- Below Tm (upon cooling through 55 °C down to 25 °C): The saturated C18 chains of Stearyl Alcohol Cosmetic Grade crystallize into a hexagonal rotator packing (alpha-crystalline gel state, characteristic X-ray diffraction spacing at 0.415 nm / 4.15 Angstroms). In these bilayers, the terminal -OH groups of Stearyl Alcohol hydrogen-bond tightly with the polar headgroups of the primary surfactant, creating thick interlamellar water channels (15 to 35 nm wide via electrostatic or steric repulsion) that trap bulk water!

 Optimal Surfactant-to-Stearyl Alcohol Molar Ratios and Cetyl/Stearyl Co-Crystallization:
- Optimal Molar Ratio (3:1 to 6:1 Fatty Alcohol : Surfactant): Maximum lamellar gel viscosity and zero water syneresis occur when the molar ratio of Stearyl Alcohol Cosmetic Grade (or mixed Cetyl/Stearyl Alcohol) to primary surfactant is maintained between 3:1 and 5:1 (corresponding roughly to a 3:1 to 4:1 weight ratio).
- Preventing Polymorphic Alpha-to-Beta Recrystallization over Shelf Life: Pure 100% C18 1-Octadecanol in aqueous binary water-alcohol systems slowly converts from the hydrated hexagonal alpha-gel into brittle, non-swelling orthorhombic/monoclinic beta/gamma crystals over weeks if no co-amphiphile is present. Combining Stearyl Alcohol Cosmetic Grade with either a well-matched primary emulsifier (like Behentrimonium Chloride or Ceteareth-20) or blending Stearyl Alcohol (C18) with Cetyl Alcohol (C16) at a 70:30 or 60:40 C18:C16 ratio locks the lamellar bilayers permanently in the smooth, creamy alpha-gel state for 36+ months!

COMPREHENSIVE COSMETIC AND PERSONAL CARE APPLICATIONS AND FORMULATION GUIDELINES

Stearyl Alcohol Cosmetic Grade supplied by Ataman Kimya is utilized across seven core personal care and dermo-cosmetic product categories:

 Rinse-Off Hair Conditioners, Deep Repair Hair Masks, and Leave-In Detanglers (2.0% to 7.0% w/w):
- Superior Wet & Dry Combing Reduction: In cationic hair conditioners formulated at pH 3.8 to 5.0, Stearyl Alcohol Cosmetic Grade (dosed at 2.5 percent to 6.0 percent w/w alongside 1.0 percent to 3.0 percent active Behentrimonium Chloride, Behentrimonium Methosulfate, Cetrimonium Chloride, or Stearamidopropyl Dimethylamine) forms the lamellar gel vehicle that deposits positively charged surfactant-alcohol complexes onto damaged, negatively charged hair cuticles. Compared with Cetyl Alcohol (C16), the longer 18-carbon chain of Stearyl Alcohol Cosmetic Grade provides a 15 percent to 25 percent greater reduction in wet and dry combing force, superior cuticle smoothing, higher hydrophobic humidity-frizz resistance, and richer, heavier cream body for thick, curly, or bleached hair.

 Permanent and Demi-Permanent Oxidative Hair Dye Creams & Bleaching Developers (4.0% to 12.0% w/w):
Because Stearyl Alcohol Cosmetic Grade contains no hydrolysable ester bonds and no ionizable carboxyl groups, it is 100 percent chemically stable in both highly alkaline Hair Colorant Cream Bases (pH 9.5 to 11.2 containing ammonia or monoethanolamine) and strongly acidic Hydrogen Peroxide Cream Developers (pH 2.0 to 3.5 containing 3% to 12% H2O2), building non-drip pseudoplastic viscosity upon mixing the two components at a 1:1 or 1:1.5 ratio.

 Facial Moisturizers, Barrier-Repair Dermo-Cosmetics, Hand Creams, and Body Butters (1.0% to 6.0% w/w):
- Biomimetic Stratum Corneum Barrier Support & TEWL Reduction: Incorporated into the oil phase of O/W and W/O skin emulsions at 1.0 percent to 5.0 percent w/w, Stearyl Alcohol Cosmetic Grade forms a breathable, semi-occlusive lamellar lipid film on the epidermis that reduces transepidermal water loss (TEWL) and imparts a powdery, cushiony, velvety matte after-feel.
- Anti-Soaping Advantage: Unlike Stearic Acid or high-C16 alcohols, Stearyl Alcohol Cosmetic Grade generates minimal interfacial micro-foaming during skin rub-out, helping formulators eliminate the unsightly "white soaping effect" when combined with 0.5 percent to 1.5 percent dimethicone or medium-spreading esters.

 Anhydrous Antiperspirant and Deodorant Solid Sticks & Soft-Solid Creams (14.0% to 22.0% w/w):
High-purity Stearyl Alcohol Cosmetic Grade (specifically the >= 98% C18-98 grade, melting point 57.5 °C to 60.0 °C) is the industry-standard primary wax structurant for invisible dry-feel antiperspirant sticks:
- Suspending High Payloads of Active Antiperspirant Salts: Melted at 70 °C to 78 °C in volatile Cyclopentasiloxane (D5), Isohexadecane, Coco-Caprylate/Caprate, or C12-15 Alkyl Benzoate together with 2.5 percent to 4.5 percent w/w Hydrogenated Castor Oil (MP ~85 °C as a high-temperature crystal nucleator), Stearyl Alcohol Cosmetic Grade solidifies at 50 °C to 55 °C into a fine microcrystalline matrix capable of suspending 20 percent to 25 percent w/w dense micronized Aluminum Zirconium Tetrachlorohydrex GLY powder uniformly without sedimentation. Its 58 °C melting point guarantees high stick crush-resistance in summer temperatures (> 45 °C) while shearing smoothly onto underarm skin (35 °C–37 °C) with zero white flaky transfer onto dark clothing.

 Sunscreens (SPF Creams/Lotions), Depilatory Creams, and AHA/BHA Chemical Exfoliants (1.5% to 6.0% w/w):
- SPF Photoprotection Booster: In mineral (TiO2, ZnO) and organic UV-filter sunscreens, the lamellar gel network formed by Stearyl Alcohol Cosmetic Grade prevents pigment/filter agglomeration and creates a uniform, even film thickness across skin micro-topography, boosting in-vivo SPF and water resistance.
- Extreme pH Compatibility: Completely stable in Glycolic / Lactic / Salicylic Acid peeling creams (pH 2.5 to 3.8) as well as Calcium/Potassium Thioglycolate hair-removal depilatory creams (pH 11.5 to 12.5).

 Lipsticks, Lip Balms, Solid Perfume Sticks, and Cream Make-Up Foundations (3.0% to 15.0% w/w):
Used in lip balms, lipsticks, concealer sticks, and cream-to-powder foundations to lower dragging friction, prevent liquid oil syneresis ("lipstick sweating"), and impart a creamy, skin-melting glide.

 Practical Guide Cosmetic Formulations Featuring Stearyl Alcohol Cosmetic Grade:
- Guide Formulation 1 (Luxury Silicone-Free Vegan Hair Repair Mask, pH 4.2): Deionized Water 84.3 percent w/w, Stearyl Alcohol Cosmetic Grade (INCI: STEARYL ALCOHOL, C18 >= 96%) 5.0 percent w/w, Cetyl Alcohol 1.5 percent w/w, Behentrimonium Chloride (80% active) 2.5 percent w/w, Caprylic/Capric Triglyceride 2.5 percent w/w, Organic Argan / Jojoba Seed Oil 1.5 percent w/w, Glycerin 1.5 percent w/w, D-Panthenol 0.5 percent w/w, Lactic Acid (to pH 4.2) 0.1 percent w/w, and Preservative + Allergen-Free Fragrance 0.6 percent w/w.
- Guide Formulation 2 (Ceramide-Mimetic Sensitive Skin Barrier Repair Cream, pH 5.2): Deionized Water 73.8 percent w/w, Glycerin 4.0 percent w/w, Niacinamide (Vitamin B3) 2.0 percent w/w, Stearyl Alcohol Cosmetic Grade (INCI: STEARYL ALCOHOL) 3.5 percent w/w, Cetearyl Glucoside / Sorbitan Olivate (Natural Emulsifier) 3.5 percent w/w, Caprylic/Capric Triglyceride 6.0 percent w/w, Squalane 3.0 percent w/w, Shea Butter (Butyrospermum Parkii) 2.5 percent w/w, Mixed Tocopherols (Vitamin E) 0.5 percent w/w, Xanthan Gum 0.2 percent w/w, and Phenoxyethanol / Ethylhexylglycerin 1.0 percent w/w.
- Guide Formulation 3 (D5-Free Clean-Beauty Invisible Antiperspirant Solid Stick): C12-15 Alkyl Benzoate 26.0 percent w/w, Coco-Caprylate/Caprate 22.0 percent w/w, Aluminum Zirconium Tetrachlorohydrex GLY 24.0 percent w/w, Stearyl Alcohol Cosmetic Grade (98%+ High-Purity C18-98 Grade) 18.5 percent w/w, Hydrogenated Castor Oil (MP 85 °C) 3.5 percent w/w, PPG-14 Butyl Ether 4.0 percent w/w, Tapioca Starch 1.0 percent w/w, and Fragrance 1.0 percent w/w.

COSMETIC PROCESSING PROTOCOL: MELTING, EMULSIFICATION, COOLING RATE AND STICK POURING

To achieve maximum viscosity stability, microscopic droplet size (< 2 to 5 microns), and smooth crystal texture when formulating with Stearyl Alcohol Cosmetic Grade, cosmetic R&D and production engineers should observe four quantitative processing rules:

 Oil-Phase Melting Temperature (70 °C to 78 °C / 158 °F to 172 °F):
Combine Stearyl Alcohol Cosmetic Grade pastilles with the oil-phase emollients and oil-soluble emulsifiers in the jacketed oil kettle and heat to 70 °C to 78 °C (12 °C to 18 °C above its 58 °C melting point) until completely clear and homogeneous. Heating to at least 70 °C–75 °C is essential to erase solid crystal memory and exceed the hydrated chain-melting transition temperature (Tm ~56 °C–58 °C) when the aqueous phase (also heated to 72 °C–78 °C) is added. Never overheat above 85 °C–90 °C for prolonged periods.

 High-Shear Rotor-Stator Homogenization Above Tm (65 °C to 75 °C):
Perform high-shear rotor-stator homogenization (typically 2,500 to 4,000 rpm for 3 to 8 minutes depending on batch size) while the batch temperature is still between 65 °C and 75 °C (in the fluid L-alpha liquid-crystalline state). Crucially, STOP high-shear turbine homogenization once the emulsion cools below 55 °C to 50 °C! Applying violent rotor-stator shear below 50 °C—after the Stearyl Alcohol Cosmetic Grade lamellar alpha-gel bilayers have crystallized—permanently shatters the three-dimensional lamellar gel network, causing a 40 percent to 60 percent drop in final cream viscosity!

 Controlled Anchor/Sweep Cooling Through the Crystallization Window (58 °C down to 35 °C):
Cool the emulsion from 60 °C down to 30 °C–35 °C at a moderate, controlled cooling rate of 0.5 °C to 1.5 °C per minute using low-speed anchor or planetary sweep agitation (30 to 60 rpm) to allow uniform lamellar alpha-gel nucleation and smooth viscosity build (note that full equilibrium viscosity builds over 24 to 48 hours post-manufacture).

 Antiperspirant Deodorant Stick Pouring Temperature (53 °C to 57 °C):
When manufacturing anhydrous antiperspirant sticks with 98% Stearyl Alcohol Cosmetic Grade, cool the molten suspension under continuous agitation to 53 °C to 57 °C (just 1 °C to 3 °C above the onset of crystallization) before filling into stick barrels. Pouring too hot (> 65 °C) causes slow cooling inside the plastic barrel, leading to large brittle Stearyl Alcohol crystals, deep center shrinkage cavities (sinkholes), and active powder settling.

PACKAGING, STORAGE AND HANDLING GUIDELINES

To protect the snow-white appearance, neutral odor profile, free-flowing pastille/flake geometry, and microbiological cleanliness of Stearyl Alcohol Cosmetic Grade (INCI: STEARYL ALCOHOL, CAS 112-92-5), cosmetic warehouses and manufacturing plants should follow the storage and handling standards established by Ataman Kimya:

Commercial Packaging Formats Supplied by Ataman Kimya:
- 20 kg and 25 kg Net Polyethylene-Lined Multi-Wall Paper Bags, Woven PP Bags, or Cartons: Heavy-duty export bags or corrugated boxes lined with a sealed food/cosmetic-grade low-density polyethylene (LDPE) moisture- and odor-barrier inner bag containing dust-free Stearyl Alcohol Cosmetic Grade Pastilles or Flakes (standard palletization: 40 x 25 kg bags = 1,000 kg net or 40 x 20 kg = 800 kg net on shrink-wrapped ISPM-15 pallets).
- 500 kg to 850 kg Net Lined Flexible Intermediate Bulk Containers (FIBCs / Big Bags): Available for high-volume personal care and hair conditioner contract manufacturers.

Storage Conditions, Temperature Limits, and Shelf Life:
 Cool, Dry, Odor-Free Cosmetics Warehouse (< 30 °C to 35 °C / 86 °F to 95 °F): Store Stearyl Alcohol Cosmetic Grade in its tightly sealed original inner LDPE liner bag inside a clean, dry, well-ventilated indoor cosmetics raw-material warehouse maintained between 10 °C and 30 °C (maximum 35 °C) and relative humidity below 65 percent, away from direct UV sunlight, steam pipes, and radiators. Although Stearyl Alcohol Cosmetic Grade (MP 56 °C–60 °C) is far less prone to summer sintering than Cetyl Alcohol (MP 49 °C), avoid stacking pallets more than two high in warm climates to prevent pressure blocking of the bottom bags.
 Protection Against Foreign Odor Absorption: Because solid fatty alcohol pastilles have a high lipophilic surface area, always re-seal partially used bags immediately and store away from volatile fragrance oils, essential oils, ammonia, or organic solvents so the pastilles do not adsorb airborne odors.
 Certified Shelf Life: When stored unopened under recommended cool, dry warehouse conditions (< 30 °C), Stearyl Alcohol Cosmetic Grade maintains full analytical and sensory specification compliance for 24 to 36 months (2 to 3 years) from the date of manufacture.

FIRST AID MEASURES, DERMATOLOGICAL TOXICOLOGY AND SAFETY INFORMATION

Stearyl Alcohol Cosmetic Grade (INCI: STEARYL ALCOHOL, CAS 112-92-5, EC 204-017-6) is one of the safest, most thoroughly evaluated topical emollients in cosmetic science. It is NOT classified as a hazardous substance or mixture under EU CLP Regulation (EC) No 1272/2008 or UN GHS, carrying zero hazard pictograms or signal words.

Dermatological, Toxicological, and CIR Safety Assessment Profile:
- Cosmetic Ingredient Review (CIR) Expert Panel Conclusion: Evaluated and re-affirmed as "Safe as Used in cosmetic formulations" with no concentration limit restrictions (historically tested safe in clinical human formulations at concentrations up to 56% w/w).
- Acute Oral & Dermal Safety (OECD 401 / 402): Oral LD50 (rat) > 5,000 to 20,000 mg/kg bw; Dermal LD50 (rabbit) > 3,000 to 5,000 mg/kg bw (practically non-toxic).
- Skin Irritation & Sensitization (OECD 404 / 406 / HRIPT): Non-irritating to intact or abraded skin; non-sensitizing and hypoallergenic in Human Repeated Insult Patch Tests (HRIPT) and Guinea Pig Maximization Tests; non-phototoxic and non-photosensitizing under UVA/UVB exposure.
- Ocular Safety (OECD 405): Non-irritating in cosmetic emulsion use levels (1% to 10% w/w); pure solid particles cause only mild, transient mechanical conjunctival redness without corneal injury.

First Aid Measures in Cosmetic Manufacturing Plants:
- Contact with Hot Molten Stearyl Alcohol Cosmetic Grade (> 60 °C to 85 °C): Solid pastilles at room temperature are completely harmless and soothing to skin. If hot molten Stearyl Alcohol splashes onto skin during oil-phase melting, immediately flush the affected area with cool running tap water for 10 to 15 minutes to dissipate heat. Do not rip solidified wax off burned skin; seek medical attention if thermal blistering occurs.
- Eye Contact: Flush eyes gently with lukewarm potable water or sterile saline eyewash for 10 to 15 minutes while holding eyelids open. If hot molten wax contacts the eye, flush immediately with cool water and seek urgent ophthalmological care.
- Inhalation: Negligible vapor pressure at ambient temperature; if fine dust is generated during pneumatic conveying or if hot vapors are emitted from an overheated kettle (> 130 °C), move the worker to fresh air.
- Ingestion: Rinse mouth with water. Do not induce vomiting. Consult a physician if large quantities are ingested.
- Fire-Fighting & Spill Cleanup: Closed-Cup Flash Point is ~185 °C to 195 °C. Extinguish molten wax kettle fires with alcohol-resistant foam, dry chemical powder (ABC/BC), CO2, or fine water mist—never use a solid water jet on burning molten fatty alcohol! Sweep up spilled solid pastilles mechanically; allow molten spills to solidify below 55 °C, scrape up, and scrub floors with hot water and alkaline detergent to eliminate slip hazards.

REGULATORY STATUS, CLEAN-BEAUTY CERTIFICATIONS AND GLOBAL COMPLIANCE

Stearyl Alcohol Cosmetic Grade supplied by Ataman Kimya meets all global personal-care, dermo-cosmetic, and pharmacopeial regulatory frameworks:

 Global Cosmetics Regulations (EU, USA, UK, ASEAN, China, Japan, Canada):
- European Union & UK: Approved without restriction under EU Cosmetics Regulation (EC) No 1223/2009 and UK Cosmetics Regulation (CosIng Ref No. 38262; INCI: STEARYL ALCOHOL); 100% free of CMR substances, nanomaterials, SVHCs, and Annex II/III restricted substances.
- China NMPA (CSAR): Listed in the Inventory of Existing Cosmetic Ingredients in China (IECIC 2021, Serial No. 08005: STEARYL ALCOHOL; maximum historical use concentration recorded in IECIC: 53.5% in leave-on products and 50.0% in rinse-off products).
- Japan MHLW & JSQI: Compliant with Japanese Standards of Quasi-Drug Ingredients (JSQI) and Japanese Cosmetic Ingredient Codex (JCIC) as Stearyl Alcohol.

 Pharmacopeial Monographs (USP-NF, Ph. Eur., BP, JP):
Dual-certified Cosmetic / Compendial grades satisfy the official monographs of the United States Pharmacopeia–National Formulary (USP-NF: Stearyl Alcohol), European Pharmacopoeia (Ph. Eur.: Alcohol stearylicus), and British Pharmacopoeia (BP) for medicated dermo-cosmetics, OTC sunscreens, and topical pharmaceutical creams.

 Clean-Beauty, Natural Origin (ISO 16128), Vegan, Halal, Kosher, and RSPO Status:
- ISO 16128 Natural Origin Index: Vegetable-derived Stearyl Alcohol Cosmetic Grade has a Natural Origin Index of 1.00 (100% Derived Natural Ingredient under ISO 16128-1 / 16128-2).
- Ethical & Dietary Certifications: 100 percent Plant-Based / Vegan (zero animal tallow or lanolin derivatives), Cruelty-Free (never tested on animals), Non-GMO, Halal certified, Kosher Parve certified, and available with RSPO (Roundtable on Sustainable Palm Oil) Mass Balance (MB) or Segregated (SG) supply-chain certification.
- Free-From Profile: 100 percent free of 1,4-Dioxane, Ethylene Oxide, Parabens, Phthalates, Silicones, Sulfates, Gluten, Soy/Nut Allergens, Microplastics, and Residual Petrochemical Solvents (ICH Q3C).
- Transport Classification (ADR / IMDG / IATA): Not Regulated as Dangerous Goods (UN Number: Not Regulated; Marine Pollutant: No).

FREQUENTLY ASKED QUESTIONS (FAQ)

 What is Stearyl Alcohol Cosmetic Grade and what is its official INCI name?
Stearyl Alcohol Cosmetic Grade (CAS 112-92-5, EC 204-017-6, official INCI name: STEARYL ALCOHOL) is a high-purity, steam-deodorized, plant-derived saturated C18 primary fatty alcohol (1-Octadecanol, C18H38O, MW 270.49 g/mol) supplied in snow-white, odorless pastilles and flakes. Specifically refined for personal care and dermo-cosmetics, it features a high C18 chain purity (>= 95% to 98%+), water-white molten color (<= 10 APHA), ultra-low carbonyl/odor profile, and zero unsaturation (Iodine Value <= 0.5 g I2/100 g).

 Why is Stearyl Alcohol Cosmetic Grade considered a "good, moisturizing alcohol" rather than a drying alcohol in skin care?
Consumers often confuse INCI STEARYL ALCOHOL with volatile short-chain alcohols like Alcohol Denat. (ethanol) or Isopropyl Alcohol. Short-chain solvent alcohols evaporate rapidly and strip skin barrier lipids. By contrast, Stearyl Alcohol Cosmetic Grade is a non-volatile, oil-soluble 18-carbon vegetable lipid wax (melting point 56 °C to 60 °C) that forms hydrated lamellar bilayers mimicking the skin's natural stratum corneum barrier—locking in moisture, reducing transepidermal water loss (TEWL), and soothing dry or sensitive skin without any stinging or dryness.

 How does Stearyl Alcohol Cosmetic Grade build viscosity in creams, lotions, and hair conditioners?
Although Stearyl Alcohol Cosmetic Grade is not a standalone primary emulsifier (effective HLB ~1.2), when it is melted at 70 °C–75 °C with a hydrophilic primary surfactant (such as Ceteareth-20, Sodium Stearoyl Glutamate, Potassium Cetyl Phosphate, or Behentrimonium Chloride) at a 3:1 to 5:1 molar ratio and cooled below 55 °C, its C18 chains crystallize into a hydrated hexagonal alpha-crystalline Lamellar Gel Network (LGN). These multi-lamellar bilayers trap bulk interlamellar water and build rich, shear-thinning (pseudoplastic) cream viscosity with a velvety, non-greasy rub-out.

 When should a cosmetic chemist choose Stearyl Alcohol Cosmetic Grade (C18) instead of Cetyl Alcohol (C16) or Cetearyl Alcohol (C16/C18)?
Choose Stearyl Alcohol Cosmetic Grade (C18, melting point 56 °C–60 °C) whenever you need: (a) higher thermal viscosity stability in creams/lotions exposed to warm climates (> 40 °C); (b) firmer structural hardness and zero oil sweating in anhydrous antiperspirant deodorant sticks and lip balms; (c) heavier, silkier cuticle smoothing and wet/dry combing reduction in hair conditioners and masks; or (d) reduced "soaping" (whitening on rub-out) in O/W lotions compared to shorter-chain Cetyl Alcohol (C16, MP 47 °C–51 °C). In many emulsions, chemists blend Stearyl Alcohol Cosmetic Grade and Cetyl Alcohol in a custom 70:30 or 60:40 ratio to lock in long-term alpha-gel stability.

 What is the difference between 95% (C18-95) and 98%+ (C18-98) Stearyl Alcohol Cosmetic Grade?
The 95% Cosmetic & Compendial Grade (C18 >= 95.0% to 97.5%, containing ~1.5% to 3.0% C16 Cetyl Alcohol) satisfies USP-NF and Ph. Eur. monographs and is ideal for O/W skin creams, body lotions, hair conditioners, and topical dermatological ointments. The 98%+ Ultra-Pure Cosmetic Grade (C18 >= 98.0% to 99.2%) provides the sharpest, highest solidification point (56.5 °C to 58.5 °C) and narrowest crystal lattice, making it the preferred grade for invisible solid antiperspirant deodorant sticks where uniform crystal size and zero summer stick sweating are critical.

 Why must high-shear homogenization be stopped below 50 °C–55 °C when cooling emulsions containing Stearyl Alcohol Cosmetic Grade?
Above 58 °C, Stearyl Alcohol Cosmetic Grade exists in a fluid liquid-crystalline state (L-alpha) that tolerates high-shear rotor-stator homogenization (2,500–4,000 rpm) to create fine oil droplets. However, as the emulsion cools through 55 °C down to 45 °C, the C18 chains freeze into the three-dimensional alpha-crystalline lamellar gel network. Continuing high-shear turbine homogenization below 50 °C mechanically rips apart these newly formed lamellar gel sheets, permanently reducing final cream viscosity by 40 percent to 60 percent; therefore, switch to gentle anchor/sweep agitation (30–60 rpm) below 55 °C.

 Is Stearyl Alcohol Cosmetic Grade non-comedogenic and safe for acne-prone, rosacea-prone, and baby skin?
Yes, Stearyl Alcohol Cosmetic Grade is dermatologically non-irritating, non-sensitizing (hypoallergenic in human patch tests), and non-comedogenic at normal cosmetic emulsion levels (1.0% to 6.0% w/w), and is approved by the US CIR and EU Regulation 1223/2009 without concentration limits. Because Ataman Kimya's cosmetic grade is strictly fractionated to eliminate irritating short-chain C12/C14 alcohols (<= 0.1%–0.3%), it is widely used in pediatrician-recommended baby creams and ceramide barrier-repair lotions.

 Can Stearyl Alcohol Cosmetic Grade be used in extreme-pH cosmetics like AHA chemical peels, hair dyes, and depilatories?
Yes, unlike Stearic Acid (which precipitates below pH 6.0) or fatty acid esters (which hydrolyze at high or low pH), the primary alcohol group (-CH2OH) of Stearyl Alcohol Cosmetic Grade is chemically nonionic and resistant to hydrolysis across pH 2.0 to 12.5. This makes it the ideal viscosity structurant for glycolic/salicylic acid peels (pH 2.5–3.8), hydrogen peroxide hair developers (pH 2.0–3.5), ammonia hair colorants (pH 10.0–11.2), and thioglycolate depilatory creams (pH 11.5–12.5).

 Does Stearyl Alcohol Cosmetic Grade meet ISO 16128 Natural Origin, Vegan, Halal, and 1,4-Dioxane-Free requirements?
Yes, vegetable-derived Stearyl Alcohol Cosmetic Grade supplied by Ataman Kimya is produced 100 percent from renewable plant oils (Natural Origin Index = 1.00 per ISO 16128) without ethylene oxide ethoxylation, guaranteeing 0.0 ppm 1,4-dioxane and ethylene oxide, and is certified 100% Vegan, Cruelty-Free, Non-GMO, Halal, and Kosher, with RSPO Mass Balance (MB) options available.

 How can cosmetic brands and contract manufacturers order Stearyl Alcohol Cosmetic Grade and obtain COA, TDS, SDS, and IFRA/Allergen statements from Ataman Kimya?
Cosmetic manufacturers and R&D laboratories can procure Stearyl Alcohol Cosmetic Grade (INCI: STEARYL ALCOHOL, CAS 112-92-5, EC 204-017-6) in both 95% (C18-95) and 98%+ (C18-98) pastille and flake grades in 20 kg or 25 kg PE-lined bags/cartons—complete with batch-specific Certificates of Analysis (COA), Technical Data Sheets (TDS), Safety Data Sheets (SDS), and EU 1223/2009 / ISO 16128 / Vegan / Halal regulatory dossiers—directly from Ataman Kimya by calling +90 216 577 10 10 or emailing info@atamankimya.com.

TECHNICAL SUMMARY

Stearyl Alcohol Cosmetic Grade—universally recognized across global personal care, dermo-cosmetic, and pharmacopeial standards under its official INCI designation STEARYL ALCOHOL, Vegetable-Derived 1-Octadecanol, Cosmetic Octadecan-1-ol, Ph. Eur. Alcohol stearylicus, and Kozmetik Kalite Stearil Alkol (CAS Number 112-92-5, EC / EINECS Number 204-017-6, CosIng Ref No. 38262, Molecular Formula C18H38O, Molecular Weight 270.49 g/mol)—stands as the benchmark 100 percent plant-based, saturated C18 primary fatty alcohol for lamellar gel-network emulsion stabilization, cationic hair conditioning, anhydrous antiperspirant stick structuring, and barrier-repair skin care. Refined and steam-deodorized to achieve high C18 homologue purity (>= 95.0 percent in C18-95 grade and >= 98.0 percent to 99.2 percent in C18-98 grade with C12/C14 <= 0.1 percent to 0.3 percent), a sharp melting range of 56.0 °C to 60.0 °C, a Hydroxyl Value of 200 to 215 mg KOH/g, ultra-low Iodine Value (<= 0.5 g I2/100 g), negligible Acid and Saponification Values (<= 0.1 to 0.5 mg KOH/g), and water-white molten clarity (APHA <= 10 to 15), Stearyl Alcohol Cosmetic Grade delivers odorless sensory elegance, velvety non-greasy emollience, extreme pH stability (pH 2.0 to 12.5), and full compliance with EU Cosmetics Regulation (EC) No 1223/2009, ISO 16128 (Natural Origin Index = 1.00), USP-NF, and Ph. Eur. standards.

Ataman Kimya supplies premium, dust-free Stearyl Alcohol Cosmetic Grade Pastilles and Flakes (across C18-95 Emulsion/Conditioner Grade and C18-98 Antiperspirant Stick Grade) in moisture- and odor-barrier 20 kg and 25 kg polyethylene-lined bags and cartons, backed by ready warehouse stock in Turkey, strict batch-to-batch analytical and sensory verification, and fast domestic and international logistics. To request a commercial quotation, pallet pricing, R&D formulation samples, Technical Data Sheets (TDS), Safety Data Sheets (SDS), EU 1223/2009 / ISO 16128 cosmetic dossiers, or a batch-specific Certificate of Analysis (COA) for Stearyl Alcohol Cosmetic Grade (INCI: STEARYL ALCOHOL, CAS 112-92-5), please contact the technical sales team at Ataman Kimya using the contact details below.

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