Sunset yellow by Research Lab Fine Chem Industries is a high grade reagent. Also known as Orange Yellow S, this compound is a petroleum-derived orange azo dye. The reagent is available as a powder. It has a melting point of 300 C. Sunset yellow has a pH dependent maximum absorption at about 480 nm at pH 1 and 443 nm at pH 13. While this reagent is stable under general conditions, it is incompatible with strong oxidizing reagents. CAS No.: 2783-94-0 Quantity Provided: 25 gm per bottle Molecular formula: C16H10N2Na2O7S2 Molecular weight: 452.37 Assay: 90 %Sunset yellow has a variety of applications in chemical and biological sectors. It finds applications in the organic synthesis of various derivative compounds. This indicator is used in food, cosmetics, and drugs. It is added as E110 in the food industry, in candy, desserts, snacks, sauces, and preserved fruits. Sunset yellow produces a brown colouring in both chocolates and caramel, when used with E123, amaranth. This reagent is suitable for industrial synthesis of products and research applications.