dye|World dye variety

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

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.

List of Suppliers:

Foulard Discharge Blue B( Bayer Group )