Decamethylcyclopentasiloxane (D5)

CAS No.: 541-02-6

Who is Origin and Major Production Regions for Decamethylcyclopentasiloxane (D5) ?

- China: Major producers in Hunan SLQ Materials Technology co.,ltd

1. Physical and Chemical Properties

- Appearance: Colorless, transparent, mobile liquid

- Molecular formula: C₁₀H₃₀O₅Si₅

- Molecular weight: 370.77 g/mol

- Boiling point: 210 °C

- Melting point: −44 °C

- Density (25 °C): 0.95–0.96 g/cm³

- Viscosity (25 °C): 2.5 mm²/s

- Flash point: ≥78 °C (closed cup)

- Volatility: Moderate to high volatility

- Solubility: Insoluble in water; miscible with low-molecular-weight siloxanes, hydrocarbons, ethers and many organic solvents

- Stability: Chemically stable under normal conditions; resistant to oxidation, hydrolysis and low to moderate temperatures

Typical Specifications

- Purity: ≥99.0%

- Color (APHA): ≤10

- Refractive index (25 °C): 1.396–1.398

- Moisture: ≤0.1%

- Volatile matter: ≤0.5%

2. Application Fields

- Personal care & cosmetics: Main ingredient in skin creams, lotions, hair care products, deodorants and sunscreens as a volatile carrier, spread
2. Application Fields

- Personal care & cosmetics: Main ingredient in skin creams, lotions, hair care products, deodorants and sunscreens as a volatile carrier, spreading agent and emollient

- Daily chemicals: Used in antistatic agents, car polishes, leather care products and home care formulations

- Industrial cleaning: Solvent and cleaning agent for precision instruments and electronic components

- Rubber & plastics: Mold release agent, softener and surface modifier

- Defoaming agent: Low-temperature defoamer in water-based systems

- Organic synthesis: Intermediate for silicone polymers and functional silicone materials

3. Performance as a Lubricant Additive

- Excellent low-temperature fluidity and high-temperature stability

- Low surface tension, good wetting and spreading properties on metal surfaces

- Good lubricity for light-load, high-speed applications

- Low volatility compared to low-molecular hydrocarbon oils

- Compatibility with mineral oils, syntheti
- Compatibility with mineral oils, synthetic hydrocarbons and some greases

- Used as a lubricity booster, friction reducer, release agent and antistatic component in lubricating greases, mold oils and special industrial lubricants

- Typical treat rate: 1.0–5.0 wt% in special lubricant formulations

4. Origin and Major Production Regions

- China: Major producers in Hunan SLQ Materials Technology co.,ltd

Lubricant Additives

Product features:

Ultra low ash, low phosphorus, low sulfur, and post-treatment protection

Low conductivity, insulation, copper aluminum corrosion resistance, low friction, high speed stability

Sulfur free, ash free, hydrogen embrittlement resistant, high temperature resistant.