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.

Hunan SLQ Materials Technology Co.,ltd .(short as SLQ)

Your Partner in China, a Professional chemical raw material manufacturer, our main products include :

● Fuel oil Additives

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