Agent Name

Triethylboron

CAS Number

97-94-9

Formula

C6-H15-B

Major Category

Metals

Synonyms

Borane, triethyl-; Boron ethyl; Boron triethyl; Triethylborane; Triethylborine; [ChemIDplus] UN2845

Category

Metalloid Compounds (Boron)

Description

Colorless liquid; [Merck Index]

Sources/Uses

Used as a fuel additive, fuel igniter, polymerization catalyst, and intermediate; [HSDB] Used in organic syntheses (radical initiator and blocking agent); [Merck Index]

Comments

Highly irritating; Animals exposed to high inhalation dose have lung irritation and convulsions; Oral LD50 (rat) = 235 mg/kg; ". . . would decompose before occupational exposure can occur." [HSDB] Spontaneously flammable; [Merck Index] Corrosive to skin and eyes; [eChemPortal: ERMA] The trialkylborons are not soluble nor reactive in water; Toxic to rats at nonpyrophoric concentrations; [Ullmann] Pyrophoric; A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; [MSDSonline] See "Tri-n-butylborane."

Exposure Assessment
Vapor Pressure

53 mm Hg

Lethal Concentration

LC50 (rat) = 700 ppm/4h

Explanatory Notes

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

Adverse Effects
Toxic Pneumonitis

Yes

Neurotoxin

Other CNS Neurotoxin

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
Processes

Industrial Processes with risk of exposure: