Trimethyl borate

From Wikipedia, the free encyclopedia

Trimethyl borate

Identifiers
CAS number	[121-43-7]
SMILES	COB(OC)OC
Properties
Molecular formula	C₃H₉BO₃
Molar mass	103.91 g mol^-1
Appearance	clear liquid
Density	0.915 g/ml
Melting point	−34
Boiling point	68-69 °C, 341-342 K, 154-156 °F
Solubility in water	decomposes
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Trimethyl borate, or boron trimethoxide, has formula B(OCH₃)₃. It is a clear liquid. It melts at −34 °C and boils at 68-69 °C. It decomposes in contact with water. It is flammable and burns with a green flame.

It is primarily used as a precursor to boronic esters and boronic acids for Suzuki couplings. Other uses include :

Anti-oxidant in Brazing and Solder Flux
Wood preservative
Catalyst of olefin polymerisation
raw material in the production of borophosphosilicate glass film by chemical vapor deposition
raw material in the production of specialty glasses using sol-gel technology
solvent or catalyst for resins, waxes, paints, and varnishes
component of some flame retardants in textile industry
component of some welding fluxes
in green fire compositions for special effects (as a solution of boric acid in methanol, where it forms in small amounts)^[1]