Specifications
Food additives, Sunset yellow
Molecular formula : C16H10N2Na2O7S2
MW : 452.380
CAS No. :2783-94-0
Food medicine, cosmetic
Food additives, Sunset yellow
Disodium salt of 1-p-sulfophenylazo-2-naphthol-6-sulfonic acid;Sunset yellow FCF;FD & C Yellow No.6;C.I.Food Yellow 3(15985);1-p-Sulfophenylazo-2-hydroxynaphthalene-6-sulfonate, disodium salt
Molecular formula : C16H10N2Na2O7S2
MW : 452.380
CAS No. :2783-94-0
nature : orange-red powder. The solubility of 21 ° C : Water 25.3 ° C and 50% ethanol 0.9%. Gram-soluble oil, propylene glycol, soluble oils. 0.1% aqueous solution was yellow and orange. Light, heat, acid is very strong, alkali resistance is fairly good, but in cases of alkali was reddish-brown. The citric acid, tartaric acid and other acidic solution is stable. Reduction bleaching.
preparation methods : by diazotization of sulfanilic acid, alkaline conditions with 2-naphthol-6-sulfonic acid coupling, the production of pigments used salt precipitation, filtration and purification derived.
purposes : for food, medicine, cosmetics coloring, as well as manufacturing salt Lakes raw materials.
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