A 1252 (OTTO) Acetic acid, glacial, GR 99.7% Cas 64-19-7 - used as solvent for perchloric acid titration. A 1252 (OTTO) Acetic acid, glacial, GR 99.7% Cas 64-19-7 - used as table vinegar, as preservative and as intermediate in the chemical industry. It is useful for the extraction of glazed ceramic.