Stearyl Alcohol
ELFATTM – STO
Stearyl alcohol is a long-chain fatty alcohol derived from natural sources, renowned for its emollient, thickening, and co-emulsifying properties, widely utilized in personal care, pharmaceuticals, and cosmetic formulations due to its stability, skin compatibility, and versatility in creating various textures and delivery systems.
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CAS Number
112-92-5
HS Code
38.23.70.40
Molecular Formula
C₁₈H₃₈O
INCI Name
Stearyl Alcohol
Stearyl Alcohol
ELFATTM – STO
Stearyl alcohol is a long-chain fatty alcohol derived from natural sources, renowned for its emollient, thickening, and co-emulsifying properties, widely utilized in personal care, pharmaceuticals, and cosmetic formulations due to its stability, skin compatibility, and…
CAS Number
112-92-5
INCI Name
Stearyl Alcohol
HS Code
38.23.70.40
Molecular Formula
C₁₈H₃₈O
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Product Specification
Physical Properties
| Property | Specification |
|---|---|
| Appearance | White solid |
| Molecular Weight (G/Mol) | 270.5 |
| Density Or Specific Gravity | 0.812 g/mL at 25 °C (lit.) |
| Viscosity | 4.006mm2/s |
| Refractive Index | 1.4356 (estimate) |
| Density | 0.812 g/mL at 25 °C (lit.) |
Chemical Properties
| Property | Specification |
|---|---|
| Pka | 15.20±0.10(Predicted) |
| Water Solubility | insoluble |
Thermal Properties
| Property | Specification |
|---|---|
| Melting Point | 56-59 °C (lit.) |
| Boiling Point | 210 °C15 mm Hg |
| Flash Point | 185°C |
Processing Methods & Reference Formulations
A. Cosmetic creams
Add Stearyl Alcohol to the oil phase and heat until fully melted. It functions as a thickener and co-emulsifier, improving cream stability, texture, and providing a rich, velvety skin feel.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Water (Purified) | 70.00% |
| Stearyl Alcohol | 4.00% |
| Cetyl Alcohol | 3.00% |
| Glycerin | 5.00% |
| Stearic Acid | 3.00% |
| Glyceryl Monostearate | 2.00% |
| Mineral Oil | 5.00% |
| Dimethicone | 2.00% |
| Triethanolamine (TEA) | 1.00% |
| Methylparaben | 0.20% |
| Propylparaben | 0.10% |
| Fragrance | 0.20% |
| Preservative | 0.50% |
B. Hair conditioning shampoo
Add Stearyl Alcohol to the oil or surfactant phase and heat until fully melted. It enhances viscosity, improves creaminess, and provides a soft, conditioning feel to the shampoo.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Primary surfactants (SLES, SLS, ALES AETC.) | 8-12 % |
| Secondary surfactants (CAPB, CMEA, CDEA, CAO etc.) | 2-5% |
| Thickeners (Cetearyl Alcohol, Acrylates Copolymer, Carbomer etc.) | 2-3% |
| Stearyl Alcohol | 1-2% |
| Water | 70-80% |
| Conditioners, Preservatives, Humectants, Colorants etc. |
C. Cleansers
In cleanser formulations, add Stearyl Alcohol to the oil or heated phase to function as a thickener and skin-conditioning agent. Combine well with surfactants to improve foam stability and skin feel. Cool gradually to prevent crystallization and ensure smooth consistency.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Propylene Glycol | 6% |
| Magnesium Aluminum Silicate | 1% |
| Sodium Carboxymethyl Cellulose | 0.1% |
| Glyoxyldiureide | 0.5% |
| Stearyl Alcohol | 1.5% |
| Cetyl Alcohol | 3% |
| Glyceryl Monostearate & Polyethylene Glycol (100) Monostearate | 2% |
| Polyoxyethylene (10) Soya Sterol | 2.5% |
| Polyoxyethylene (3) Myristyl Ether Myristate | 15% |
| Squalane | 12% |
| Polydimethylcyclosiloxane (Silicone Fluid 344) | 12% |
| Preservatives, Deionized Water |
D. Lip balm
Add Stearyl Alcohol to the oil phase of the lip balm and melt it with waxes and butters. It helps improve the balm’s structure and stability while enhancing spreadability. Cool the mixture slowly to prevent graininess and maintain a uniform consistency.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Petrolatum | 30% |
| Beeswax | 20% |
| Castor Oil | 15% |
| Sweet Almond Oil | 10% |
| Stearyl Alcohol | 5% |
| Vitamin E | 1% |
| Fragrance | 0.5% |
| Tocopherol (Vitamin E) | 0.5% |
| Preservative (e.g., Phenoxyethanol) | 0.5% |
| Deionized Water | 17.5% |
Dosing Guidelines
A. Dosing by Application
| Products | Authorized dosage |
|---|---|
| Lotions & Creams | 0.1-3% |
| Shampoos & Conditioners | 0.1-3% |
About Stearyl Alcohol
About Stearyl Alcohol
Regulatory Compliance
| Region | Max Allowed Level | Notes | Certification Body |
|---|---|---|---|
| United States | - | No explicit statutory maximum. CIR and FDA confirm stearyl alcohol is safe as currently used in cosmetics. | FDA |
| European Union | - | Not restricted by the EU Cosmetics Regulation, can be used at any safe concentration. | SCCS (Scientific Committee on Consumer Safety) |
| India | - | No explicit BIS maximum for Stearyl Alcohol in cosmetics. | - |
| ASEAN | - | No specific maximum in the ASEAN Cosmetic Directive; follows international norms. | - |
| Japan | - | No explicit statutory maximum | MHLW – Ministry of Health, Labour and Welfare |
| Australia | - | No statutory maximum | - |
| China | - | No statutory maximum | NMPA - National Medical Products Administration |
| Korea, Republic of | - | No statutory maximum | MFDS - Ministry of Food and Drug Safety |
| ASEAN | - | No statutory maximum | - |
FAQs - Stearyl Alcohol
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