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Acid Red 71

Name:C.I.Acid Red 71,C.I.27165

Molecular Structure: Double azo class

C.I.Acid Red 71,C.I.27165,CAS 6226-76-2,584.53,C24H18N4Na2O7S2,Croceine Scarlet 7B

C.I.Acid Red 71,C.I.27165,CAS 6226-76-2,584.53,C24H18N4Na2O7S2,Croceine Scarlet 7B

Molecular Formula:C24H18N4Na2O7S2

Molecular Weight: 584.53

CAS Registry Number:6226-76-2

Manufacturing Methods :  2′,3-Dimethyl-4-amino-4′-sulfoazobenzene diazo, and 7-Hydroxynaphthalene-1-sulfonic acid coupling.

Properties and Applications: red. Soluble in water for product red, soluble in ethanol for red orange. The strong sulfuric acid for blue, pink is diluted. In water solution to join strong hydrochloric acid for product red; Add thick sodium hydroxide solution for shallow red sauce.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 5-6 2-3 2-3 2 1 2-3

List of Suppliers:

Croceine Scarlet 7B( Bayer Group )


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