... Molecular formula: C16H9N4Na3O9S2 MW: 534.390 CAS No. :1934-21-0 for food, medicine Lemon yellow, Tartrazine, Food additivesFood lemon yellow;Tartrazine ... the pigments used salt salting-out , generated from refining. purposes : for food, medicine, cosmetics coloring daily. Notice:Each item can have ...