Note on the Determination of Boric Oxide in Glass

JSGT 1918 V02 T246-T252  (7 pages)

In connection with the analyses carried out at the Department of Glass Technology, Sheffield University, the need arose for a quick, simple, and accurate, method of estimating boric oxide in borosilicate glasses. The current methods for this estimation are based upon one or other of two principles, the first being the removal of silica and bases which interfere with boric oxide titrations, and, the second the distillation of the boric oxide as methyl borate. The simplest methods are those based on the first principle, and so our attention was turned towards them.

J. D. Cauwood & T. E. Wilson