dye|World dye variety

Name:C.I.Direct Black 164,C.I.31536

Molecular Structure: trisazo class

C.I.Direct Black 164,C.I.31536,CAS 83293-51-0,720.65,C28H22N10Na2O7S2,Direct Black NB,Enianil Black ENB

Molecular Formula:C₂₈H₂₂N₁₀Na₂O₇S₂

Molecular Weight: 720.65

CAS Registry Number: 83293-51-0

Manufacturing Methods : N-(4-aminophenyl)acetamide diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid , amino, acylation coupled hydrolysis product to double nitriding, which in turn and Benzene-1,3-diamine and 2,4-Diaminobenzenesulfonic acid coupling.

Properties and Applications:  black.

List of Suppliers:

Direct Black NB ( Indo Colchem Ltd )

Enianil Black ENB ( Enia Industries Quimicas S.A. )