Agent Name

Trimethylborane

CAS Number

593-90-8

Formula

C3-H9-B

Major Category

Metals

Synonyms

Trimethylboron; Trimethyl borane; Trimethyl borine; TMB; [Matheson Tri-Gas MSDS] UN3160

Category

Metalloid Compounds (Boron)

Description

Colorless gas with a repulsive odor; [Matheson Tri-Gas MSDS]

Sources/Uses

Has been used as a neutron counter and in the semiconductor industry (chemical vapour deposition); [Wikipedia]

Comments

Pyrophoric; Reacts violently with water; May cause thermal burns on reaction with air or water; Sudden release of compressed gas may cause frostbite; Causes burns; Inhalation may cause corrosive injuries to upper respiratory tract; [Matheson Tri-Gas MSDS] See "Diborane" and "Tri-n-butylborane."

Exposure Assessment
TIH

Yes

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Liquefied gas, toxic, flammable, n.o.s."

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Toxicity Information

Search TOXNET

Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: