Agent Name

Trimethylarsine

CAS Number

593-88-4

Formula

C3-H9-As

Major Category

Metals

Synonyms

Arsine, trimethyl-; Trimethylarsenic; [ChemIDplus] UN1993

Category

Arsenic Compounds, Organic

Description

Colorless liquid; [Sigma-Aldrich MSDS]

Sources/Uses

"Trimethylarsine is the volatile byproduct of microbial action on inorganic forms of arsenic which are naturally occurring in rocks and soils at the parts-per-million level. Trimethylarsine has been reported only at trace levels (parts per billion) in landfill gas from Germany, Canada, and the U.S.A., and is the major arsenic-containing compound in the gas." [Wikipedia]

Comments

Causes somnolence, tremor, and ataxia in inhalation lethal-concentration studies of mice; [RTECS] May cause irritation; [Sigma-Aldrich MSDS] See "Triphenylarsine," "Diethylarsine," and "tert-Butylarsine."

Exposure Assessment
PEL (OSHA)

0.5 mg/m3, as As

Lethal Concentration

LC50 (mouse) = 20,500 ppm/4hr

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Flammable liquid, n.o.s."

Links to Other NLM Databases
Toxicity Information

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Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.