It is known that acetaminophen in aqueous solution hydrolyzes to p-aminophenol, and then easily oxidizes further,
resulting in the formation of the pink-colored quinine imines. The rate of degradation of acetaminophen increases with increasing temperature and light intensity. The degradation process is indicated by a gradual color change from light pink to dark brown.
resulting in the formation of the pink-colored quinine imines. The rate of degradation of acetaminophen increases with increasing temperature and light intensity. The degradation process is indicated by a gradual color change from light pink to dark brown.