dye|World dye variety

Name:C.I.Direct Violet 13,C.I.24080

Molecular Structure: Double azo class

C.I.Direct Violet 13,C.I.24080,CAS 13478-92-7,650.64,C31H27N6NaO7S,Direct Violet BB

Molecular Formula:C₃₁H₂₇N₆NaO₇S

Molecular Weight: 650.64

CAS Registry Number:13478-92-7

Manufacturing Methods :  3,3′-Dimethoxylbenzidine double nitriding, first and 4,6-Dihydroxynaphthalene-1-sulfonic acid, coupled with again diazo, and 4-Methylbenzene-1,3-diamine coupling.

Properties and Applications: blue purple. For purple soluble in water, soluble in ethanol is a deep red. The strong sulfuric acid for blue, blue after diluted precipitation. The dye solution to join strong hydrochloric acid is light blue; With sodium hydroxide in red.

List of Suppliers:

Direct Violet BB( Society of Chemical Industry )