Sunset yellow (SY) CAS 2783-94-0, chemical name 6-hydroxy-5- [(4-sulfophenyl) azo] -2-naphthenesulfonic acid disodium salt, molecular formula C16H10N2Na2O7S2, is a water-soluble azo colorant and is a commonly used artificial food pigment. Due to its stable properties and low price, it is widely used for coloring food and medicine.

Chinese name: Sunset Yellow

Foreign name: Sunset Yellow

Nicknames: Sunset Yellow, Sunset Yellow, Orange Yellow, Edible Yellow No. 3, Edible Yellow No. 5 (Japan), Disodium Salt of 6-hydroxy-5- [(4-sulfophenyl) azo] -2-naphthenesulfonic Acid

Chemical formula: C16H10N2Na2O7S2

Molecular weight: 452.369

CAS login number: 2783-94-0

EINECS login number: 220-491-7

Melting point: 390 ℃

Water solubility: soluble

Appearance: Orange red powder or particles

Physical and chemical properties

Melting point: 390 ℃

Appearance: Orange red powder or particles

Solubility: soluble in glycerol, propylene glycol, and water, slightly soluble in ethanol, insoluble in oils and fats

Purpose

Sunset yellow is a water-soluble azo pigment that has been found to be safe through long-term drug testing and is widely approved for use worldwide. It can be used for coloring food, medicine, and cosmetics. It can be used for fruit flavored water, fruit flavored powder, fruit dew, soda, mixed wine, candy, cakes, framed flowers, red and green silk, canned, concentrated fruit juice, green plum, flavor yogurt drinks, Prawn cracker slices, candy coating. The scope of addition and use of “sunset yellow” does not include raw, fresh meat, and cooked meat products

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