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Agent Name Methyldichlorosilane
CAS Number 75-54-7
Formula C-H4-Cl2-Si
Major Category Toxic Gases & Vapors
Synonyms Dichlorohydridomethylsilicon; Dichloromethylsilane; Methyl-dichlorsilan [Czech]; Monomethyldichlorosilane; Silane, dichloromethyl-; [ChemIDplus] UN1242; UN2985
Category Chlorosilanes
Description Colorless liquid with pungent odor; [ICSC]
Sources/Uses Used to waterproof and improve wear resistance of textiles; Also used as a monomer for silicone fluids; [HSDB]
Comments Corrosive to skin; [Quick CPC] A corrosive substance that can cause pulmonary edema; [ICSC] Can cause severe burn to eyes and skin; [HSDB] Water reactive and highly flammable; [CAMEO]
Exposure Assessment
Vapor Pressure 429 mm Hg
Lethal Concentration LC50 (rats) = 300 ppm/4h
Explanatory Notes Flash point = -14 deg F; [CAMEO]
Flammability (NFPA) 3: may ignite at ambient temperature
Adverse Effects
Toxic Pneumonitis Yes
Dermatotoxin Skin Burns
Links to Other NLM Databases
Toxicity Information Search TOXNET
Related Information in Haz-Map
Diseases Occupational diseases associated with exposure to this agent:
Processes Industrial Processes with risk of exposure:





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Last updated: January, 2009