dye|World dye variety

Name:C.I.Food Red 8,C.I.16290

Molecular Structure: Single azo class

C.I.Food Red 8,C.I.16290,CAS 5850-44-2,706.52,C20H10N2Na4O13S4

Molecular Formula:C₂₀H₁₀N₂Na₄O₁₃S₄

Molecular Weight: 706.52

CAS Registry Number:5850-44-2

Manufacturing Methods : 4-Hydroxynaphthalene-1-sulfonic acid diazo, and 7-Hydroxynaphthalene-1,3,6-trisulfonic acid coupling.

Properties and Applications: colourful red blue light. Light soluble in water for product red, slightly soluble in ethanol, insoluble in vegetable oil. The strong sulfuric acid for purple, diluted for pink. Its water solution to join strong hydrochloric acid for product red; Add thick sodium hydroxide solution for red brown. Sun of resistance, alkali resistance, heat resistance is poor, acidity and benzoic acid resistance, resistance to sulfur dioxide. And C.I. Acid Red 41 and the same chemical structure.

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