Red 33

Red 33 or D&C Red No. 33 is an azo chemical dye and is also known as CI 17200, Acid Red 33, R33. It was added to the dye list in 1984 with the name 5-Amino-4-hydroxy-3-phenylazo-2,7-naphthalenedisulfonic acid (disodium salt). D&C Red No. 33 is used in the production of a variety of products, including cosmetics and pharmaceuticals. It is a...