dye|World dye variety

Name:C.I.Acid Blue 42,C.I.17255

Molecular Structure: Single azo,Metal Complexes

C.I.Acid Blue 42,C.I.17255,CAS 6656-04-8,528.38,C16H10N4Na2O10S2

Molecular Formula:C₁₆H₁₀N₄Na₂O₁₀S₂

Molecular Weight: 528.38

CAS Registry Number:6656-04-8

Manufacturing Methods :  2-Amino-4-nitrophenol diazo, and 4-Amino-5-hydroxynaphthalene-1,3-disulfonic acid coupling, then use copper sulfate processing, make its formation copper complex,

Properties and Applications:  red light navy blue. Soluble in water for red light purple, hardly soluble in alcohol. The strong sulfuric acid to red light purple, diluted into product red. In water solution to join strong hydrochloric acid for ruby red; Add thick sodium hydroxide solution for purple.

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