ponceau 4r and its Impurities

Ponceau 4R is used to induce a red color in a variety of food products like sweets, jellies, desserts, tinned and canned fruits and foods, cakes, pastries, soups, soft drinks, canned beverages. It is synthesized using coal tar.Reference standards of Ponceau 4R API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.