Agent Name

Dichloromethylphenylsilane

CAS Number

149-74-6

Formula

C7-H8-Cl2-Si

Major Category

Toxic Gases & Vapors

Synonyms

Dichlor-fenyl-methylsilane [Czech]; Dichloromethylphenyl silane; Methylphenyldichlorosilane; Phenylmethyldichlorosilane; Silane, dichloromethylphenyl-; [ChemIDplus] UN2437

Category

Chlorosilanes

Description

Colorless liquid; [HSDB]

Sources/Uses

Used to make silicone fluids, resins, and elastomers; Also used as a comonomer for silicone oil and rubber; [HSDB]

Comments

Produces hydrogen chloride when spilled in water; [ERG] A corrosive substance that can cause injury to the skin, eyes, and mucous membranes; [HSDB] Highly flammable; Reacts vigorously with water evolving hydrogen chloride; May cause burns to skin and eyes; [CAMEO] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; [MSDSonline]

Exposure Assessment
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]

Lethal Concentration

LCLo (mice) = 30 mg/m3/2h

Explanatory Notes

VP = 1 mm Hg at 35.7 deg C; [CAMEO]

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

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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: