... No. :2783-94-0 Food medicine, cosmetic Sunset yellow, C.I.Food Yellow 3,Food additivesDisodium salt of 1-p ... acid and other acidic solution is stable. Reduction bleaching. preparation methods : by diazotization of sulfanilic acid, alkaline conditions with ... salt precipitation, filtration and purification derived. purposes : for food, medicine, cosmetics coloring, as well as manufacturing salt Lakes ...