Silicone 10000

CAS Number:

63148-62-9

Chemical / IUPAC Name:

Polydimethylsiloxane (PDMS)

INCI Name:

Dimethicone

EC Number:

613-156-5

Molecular Formula:

(C2H6OSi)n

Other Names:

Silicone oil 10000 cSt, Dimethicone 10000, PDMS 10000, High viscosity silicone fluid

Uses:

Silicone 10000 refers to a high viscosity polydimethylsiloxane (Dimethicone) fluid with a viscosity of approximately 10,000 centistokes . Due to its high molecular weight and thick consistency, it offers enhanced substantivity, long-lasting effects, and a rich, luxurious feel compared to lower viscosity grades. It is chemically inert, thermally stable, and physiologically harmless .

 

· Cosmetics & Personal Care: Widely used in skin care creams, lotions, sunscreens, and color cosmetics. It imparts a soft, velvety skin feel, improves spreadability, and provides lubricity without being sticky . It forms a non-greasy, protective film which resists water and waterborne irritants, yet allows the skin to breathe .

· Hair Care: Used in shampoos, conditioners, and styling products for its conditioning properties. It adds silky softness to hair, provides frizz control, and improves wet and dry combing .

· Industrial Applications:

  · Lubricant: Provides excellent lubrication for most plastic, elastomeric, and metal surfaces .

  · Release Agent / Mold Release: Effective in rubber, plastic, and metal die-casting applications .

  · Antifoam / Defoamer: Effectively controls foam in various processing operations, especially in non-aqueous systems .

  · Damping Fluid: Provides high damping action for mechanical and electrical equipment .

  · Dielectric Fluid / Electrical Insulating Fluid: Used as a dielectric coolant and insulating fluid .

  · Coatings Additive: Used in automotive, furniture, and specialty polishes to enhance gloss and water repellency

Origin

Silicone 10000 is a synthetic polymer derived from silica (sand/quartz). It is manufactured through a hydrolysis and polymerization process from dimethyldichlorosilane

What does Silicone 10000 do in a formulation?

  • Skin Conditioning Agent / Emollient: Provides a soft, velvety, non-greasy feel on skin; forms a protective, water-resistant film .
  • Hair Conditioning Agent: Adds silky softness, provides frizz control, and improves wet and dry combing .
  • Film Former / Barrier Agent: Creates a non-greasy, protective film that resists water and waterborne irritants while allowing skin transpiration .
  • Spreadability Enhancer: Reduces tackiness and improves the application and rub-out of cosmetic products .
  • Lubricant: Reduces friction for plastic, elastomeric, and metal surfaces .
  • Release Agent: Prevents sticking in molding and processing applications .
  • Antifoaming Agent: Reduces surface tension to control foam in industrial processes .
  • Damping Fluid: Provides vibration absorption and consistent damping action for mechanical systems .

Safety Profile (Critical):

· General Hazard Classification: Considered non-toxic, essentially inert, and physiologically harmless . Classified as a combustible liquid (Storage Class 10) . Not classified as a hazardous substance for transport .

· Safety Assessment: Recognized as safe for topical use in cosmetics by major regulatory bodies. Suitable for vegan formulations with no animal cross-contamination . Compliant with "Clean at Sephora," Ulta's "Conscious Beauty," and Credo Clean Standard requirements .

· Irritation & Sensitization: Generally regarded as non-irritating and non-sensitizing to skin. In case of eye contact, rinse with water. Use of N95 dust mask, eyeshields, and gloves recommended when handling .

· Toxicity: Very low acute toxicity. Orally, it is not absorbed by the body .

· Stability: Extremely stable with high oxidation resistance, thermal stability (-40°C to +200°C), and resistance to chemical breakdown . Fungi- and bacteria-resistant .

· Storage: Store in a cool, dry place away from heat and open flame. When stored at or below 35°C in original unopened containers, this product has a usable life of 24 months from date of production . Keep away from strong acids, alkalis, and Lewis acids.

· Shelf Life: Typically 24 months when stored properly .

· Regulatory Status: Available with Kosher and Halal certified grades. Non-GMO available . Meets pharmaceutical standards.

Technical profile:

PropertyValues
AppearanceClear, colorless, viscous liquid
OdorCharacteristic, essentially odorless
Viscosity (25°C)10,000 cSt (mm²/s)
Specific Gravity (25°C)0.971 - 0.974 g/cm³
Refractive Index (25°C)~1.403 - 1.4055
Pour Point / Freezing Point-50°C
VolatilityNot volatile ; Low volatile content (<0.8%)
Flash Point (Closed Cup)> 100°C ; 101.1°C
Flash Point (Open Cup)326°C
Surface Tension (25°C)21.5 mN/m
Vapor Pressure (25°C)<5 mmHg
Boiling Point140°C at 0.002 mmHg
Thermal Conductivity0.15 - 0.159 W/m·K
Dielectric Strength~15 kV/mm
Service Temperature Range-40°C to +200°C
SolubilityInsoluble in water; soluble in organic solvents (chlorinated, aromatic, aliphatic)
Water Hazard Class (WGK)WGK 1 (slightly hazardous to water)
Recommended Use Level0.1 – 5.0% in cosmetic formulations (varies by application)