IR spectroscopic study of the phase composition of boric acid as a component of glass batch

Analytically pure reagent boric acid, used in batches for preparing glass, was investigated by IR spectroscopy. It was found that the reagent consisted of three components-meta- and orthoboric acids and glassy boron oxide, water was present in two forms-molecular and in the form of OH groups, and impurities of organic substances and carbon dioxide were not very probable. The orthoboric acid bands at 1450, 1195, 883, 815, and 548 cm(-1) were found for the first time and were not indicated in the previously published reference spectrum.