IMPROVED METHOD FOR THE PURIFICATION OF ACETAMINOPHEN

摘要

A method is provided for purifying a crudeN-acetyl-para-aminophenol (APAP) containing color bodies ortheir precursors, the method comprising: a) forming a hotaqueous solution of the crude APAP; and b) subsequentlycontacting the hot solution with an acid washed adsorbentcarbon, e.g., an activated carbon, which acid washedcarbon, prior to such contact, has been pretreated bycontacting it with an aqueous solution of a reducingsulfite.