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Silicone oil has the following features:
low surface tension which is generally less than 209J/cm2 and is lower compared with the water and general surfactant;
it has low solubility in water and oil with high activity. This feature allows that only a very small amount of silicone oil can already capable of reducing the surface tension of water;
It has high stability upon heating and oxygen; This feature allows the silicone oil can be used at high temperature without being subject to decomposition;
It has low volatility, and is chemically inert, for example, dimethicone with a viscosity of 3 10-2m2/s (20 ) has a vapor pressure at 100 as low as only being 6.67 mPa while this value is 40 mPa at 220 . Moreover, it generally does not react with other substances; It has high flash point and flame retardancy;
It has excellent electrical insulation ability with mold release property and anti-foaming property;
It has no physiological toxicity. Oral Mice LD50:100000 mg/kg, intravenous injection-dog LD50: 1.0ml/kg.






Silicone oil viscosity 1,000 cSt (25 C)


Silicone oil viscosity 350 cSt (25 C)


Silicone oil viscosity 100 cSt (25 C)





Silicone oil


CAS RN:63148-62-9


Molecular formula:(CH3)3SiO[(CH3)2SiO]nSi(CH3)3


Appearance:Colorless transparent liquid, no visible mechanical impurities


Uses:Widely used as an insulating agent, lubricant, anti-vibration agent, dielectric fluid and heat carrier, or as defoamer, release agent, paint and daily chemical additive. 
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