Agent Name

Butyl trichlorosilane

CAS Number

7521-80-4

Formula

C4-H9-Cl3-Si

Major Category

Toxic Gases & Vapors

Synonyms

Butylsilicon trichloride; Butyltrichlorosilane; N-Butyl trichlorosilane; Silane, butyltrichloro-; Trichlorobutylsilane; [ChemIDplus] UN1747

Category

Chlorosilanes

Description

Colorless liquid; [HSDB] Faintly red clear liquid; [MSDSonline]

Sources/Uses

Used as a chemical intermediate for silicones; [HSDB]

Comments

Evolves HCl when spilled in water; [ERG 2016] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; [HSDB] An upper respiratory tract irritant; Causes severe burns to skin and eyes; [CAMEO] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; May cause chemical pneumonitis; [MSDSonline]

Exposure Assessment
TIH

Yes

Dangerous When Wet

Yes - A material that, by contact with water, is liable to become spontaneously flammable or to give off flammable or toxic gas at a rate greater than 1 L per kilogram of the material, per hour; [ERG 2004]

Explanatory Notes

Not TIH in land-based spills, but TiH substance released when spilled in water; [ERG 2016]

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: