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Trimethyl borate
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<p>Trimethyl borate is the <a href="/facts/Organoboron_compound/r6NQHXYt">organoboron compound</a> with the formula B(OCH3)3. It is a colourless liquid that burns with a green flame. It is an intermediate in the preparation of <a href="/facts/Sodium_borohydride/D2Hwts5x">sodium borohydride</a> and is a popular <a href="/facts/Reagent/c3GLInCu">reagent</a> in organic chemistry. It is a weak Lewis acid (AN = 23, <a href="/facts/Gutmann-Beckett_method/rkDcrTGV">Gutmann-Beckett method</a>). </p> <p><a href="/facts/Borate_ester/YjvR6GAH">Borate esters</a> are prepared by heating <a href="/facts/Boric_acid/0so68XIK">boric acid</a> or related boron oxides with alcohols under conditions where water is removed by azeotropic distillation. </p>