Trimethyl borate
Agent Name
Trimethyl borate
CAS Number
121-43-7
Formula
C3-H9-B-O3
Major Category
Metals
Synonyms
Borester O; Boric acid (H3BO3), trimethyl ester; Boric acid, trimethyl ester; Methyl borate; Trimethoxyborane; Trimethoxyborine; Trimethoxyboron; Trimethylester kyseliny borite [Czech]; UN2416; [ChemIDplus]
Category
Metalloid Compounds (Boron)
Description
Colorless liquid; [ICSC]
Sources/Uses
Used as a flame retardant, welding and brazing flux, chemical intermediate, fungicide, and a solvent for waxes, resins, and oils; [HSDB]
Comments
A skin and eye irritant; Inhalation may cause cough and sore throat; [ICSC] Chronic poisoning in grazing animals where soil is high in boric acid results in vomiting, diarrhea, shock, convulsions, and paralysis; Post-mortem findings include inflammation of the GI tract, liver and kidney damage, and cerebral edema; [HSDB]
Biomedical References
Exposure Assessment
Vapor Pressure
137 mm Hg
Explanatory Notes
VP from HSDB;
NFPA
may ignite at ambient temp
Adverse Effects
Neurotoxin
Other CNS neurotoxin
Hepatotoxin
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion
Diseases, Processes, and Activities Linked to This Agent
Processes
Industrial Processes with risk of exposure: