Trimethylchlorosilane is an organic substance with the chemical formula C3H9ClSi. It is a colorless transparent liquid with a pungent odor and is widely used in the synthesis of spices and organic drugs. Chinese name: trimethylchlorosilane foreign name: Chlorotrimethylsilane alias: trimethoxychlorosilane chemical formula: C3H9ClSi molecular weight: 108.642CAS registration number: 75-77-4EINECS registration number: 200-900-5 melting point: -40 ℃ boiling point: 57.7 ℃ density: 0.857 g/cm06 Flash point: 104 ℃ Properties: colorless transparent liquid. Volatile, easily hydrolyzed in humid air into free hydrochloric acid Storage: sealed, cool and dry storage Purpose: silicone liquid intermediate. Methyl silicone oil sealing agent. Water repellent.