Methyldichlorosilane
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]
Biomedical References
Exposure Assessment
TIH
Yes
Dangerous When Wet
Yes
Vapor Pressure
429 mm Hg
Lethal Concentration
LC50 (rat) = 300 ppm/4h
Explanatory Notes
Flash point = -14 deg F; [CAMEO] Not TIH in land-based spills, but TiH substance released when spilled in water; [ERG 2016]
NFPA
may ignite at ambient temp
Adverse Effects
Toxic Pneumonitis
Yes
Dermatotoxin
Skin burns
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: