PROCESS FOR THE MANUFACTURE OF AN AQUEOUS SOLUTION OF GLYOXYLIC ACID BY NITRIC ACID OXIDATION OF GLYOXAL

摘要

Process for the continuous manufacture of an aqueous solution of glyoxylic acid, nitric acid by oxidation of an aqueous solution of glyoxal in the presence of hydrochloric acid in which the oxidation is carried out continuously with the aid of 0,80 + - 0,02 mol of nitric acid and 0,70 + - 0,05 mol of hydrochloric acid per mole of glyoxal in a reaction medium with a weight concentration of between 5 and 6% of hydrochloric acid and greater than 10% of nitric acid.