Chemical Name: Octadecylmethylsiloxane, Dimethylsiloxane Copolymer
CAS No.: 67762-83-8
Appearance:White powder
Chemical Name: Octadecylmethylsiloxane, Dimethylsiloxane Copolymer
CAS No.: 67762-83-8
Appearance:White powder
Superior Organic Compatibility: The long octadecyl chain integrates seamlessly with organic oils, esters, and waxes, improving the stability and feel of emulsions and anhydrous systems.
Enhanced Sensory Profile: Imparts a unique, cushioned, and velvety feel to the skin. It reduces the greasiness of heavy formulations and provides a smooth, powdery after-feel.
Excellent Water Repellency: Forms a durable, non-occlusive, and breathable film that provides excellent water and wear resistance, making it ideal for sunscreens and long-wear cosmetics.
Improved Pigment & Active Dispersion: Acts as an effective dispersant for pigments in color cosmetics and inorganic UV filters (like Titanium Dioxide and Zinc Oxide) in sun care products, leading to more uniform coverage and enhanced efficacy.
Superior Lubricity & Slip: Provides excellent slip for easy application in skincare and makeup. In hair care, it offers superb conditioning and detangling without heavy buildup.
Long-Lasting Performance: The robust film-forming properties contribute to long-wear characteristics in foundations, lipsticks, and protective creams.
This versatile copolymer is a premium choice for formulators across various industries:
Personal Care & Cosmetics:
Skincare: Lotions, creams, and serums for a luxurious, non-tacky feel.
Suncare: Water-resistant sunscreens and sunblocks with improved SPF performance.
Color Cosmetics: Foundations, concealers, and primers for smooth application and a long-lasting, soft-focus effect.
Lip Products: Lipsticks and lip balms for improved feel, wear, and pigment dispersion.
Hair Care: Conditioners, leave-in treatments, and styling serums for shine, conditioning, and frizz control.
Antiperspirants & Deodorants: Reduces tackiness and provides a smooth, dry feel.
Industrial Applications:
Polishes & Waxes: Key ingredient in automotive and furniture polishes for high gloss, water beading, and surface protection.
Coatings & Finishes: Used as an additive to improve slip, mar resistance, and hydrophobicity.
Textile Finishing: Acts as a softening and water-repellent agent for fabrics.
Mold Release Agents: Provides an effective non-stick surface in molding operations.
Property | Typical Value |
INCI Name | Stearyl Dimethicone |
CAS Number | 67762-83-8 |
Appearance | Clear to slightly hazy, colorless viscous liquid |
Viscosity (@ 25°C) | 500 – 1,500 cSt (Custom viscosities available) |
Specific Gravity (@ 25°C) | Approx. 0.92 |
Refractive Index (@ 25°C) | Approx. 1.415 |
Solubility | Soluble in silicones, hydrocarbons, esters. Insoluble in water. |
Packaging: Available in 25 kg pails and 200 kg drums. Custom packaging options are available upon request.
Storage: Store in a cool, dry, well-ventilated area, away from direct sunlight and sources of heat. Keep container tightly sealed when not in use to prevent moisture contamination.
Shelf Life: 24 months from the date of manufacture when stored under recommended conditions.