[1] It is an intermediate in the preparation of sodium borohydride and is a popular reagent in organic chemistry.

[2] Borate esters are prepared by heating boric acid or related boron oxides with alcohols under conditions where water is removed by azeotropic distillation.

[1] Trimethyl borate is the main precursor to sodium borohydride by its reaction with sodium hydride in the Brown-Schlesinger process: It is a gaseous anti-oxidant in brazing and solder flux.

[1] It is a useful reagent in organic synthesis, as a precursor to boronic acids, which are used in Suzuki couplings.

These boronic acids are prepared via reaction of the trimethyl borate with Grignard reagents followed by hydrolysis:.