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Acid Blue 44

Name:C.I.Acid Blue 44,C.I.21640

Molecular Structure: Double azo class

C.I.Acid Blue 44,C.I.21640,CAS 6374-11-4,687.01,C27H17ClN4Na2O9S2,Foulard Discharge Blue B

C.I.Acid Blue 44,C.I.21640,CAS 6374-11-4,687.01,C27H17ClN4Na2O9S2,Foulard Discharge Blue B

Molecular Formula:C27H17ClN4Na2O9S2

Molecular Weight: 687.01

CAS Registry Number:6374-11-4

Manufacturing Methods : 2′-Methoxy-4′-amino-5′-chlorooxanilic acid diazo, and 6-Hydroxynaphthalene-2-sulfonic acid coupling, hydrolysis, the grass, then diazo, and 5-Hydroxynaphthalene-1-sulfonic acid coupling.

Properties and Applications: red light navy blue. Soluble in water for deep purple, rarely soluble in alcohol. The strong sulfuric acid in turquoise, diluted for purple. In water solution to join strong hydrochloric acid for blue purple; Add thick sodium hydroxide solution as dark blue.

Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
Fading Stain Fading Stain Fading Stain
ISO 4-5 2 2 1 2-3

List of Suppliers:

Foulard Discharge Blue B( Bayer Group )


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