PURIFICATION OF PYRUVIC ACID

摘要

PURPOSE:To effectively purify pyruvic acid in high purity and yield by bringing a pyruvic acid-contg. aqueous solution into contact with a weakly basic anion exchanger with tertiary amine as exchange group. CONSTITUTION:A pyruvic acid-contg. aqueous solution is brought into contact with a weakly basic anion exchanger with tertiary amine as exchange group to adsorb the pyruvic acid to said exchanger followed by eluting the pyruvic acid to accomplish the objective purification. For an elutant, sulfuric acid or hydrochloric acid is enough. It is preferable that the elution be conducted by passing a 0.3-1N elutant through the exchanger at a rate of 0.3-1.