dye|World dye variety

Name:C.I.Direct Blue 258,C.I.34138

Molecular Structure: trisazo class

C.I.Direct Blue 258,C.I.34138,CAS 15792-47-9,877.77,C36H22N7Na3O10S3,Durazol Blue 3R

Molecular Formula:C₃₆H₂₂N₇Na₃O₁₀S₃

Molecular Weight: 877.77

CAS Registry Number:15792-47-9

Manufacturing Methods :3-Aminobenzenesulfonic acid diazo, and Naphthalen-1-amine coupling, again diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, product to diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.

Properties and Applications: dark blue

List of Suppliers:

Durazol Blue 3R( Imperial Chemical Industries )