dye|World dye variety

Name:C.I.Direct Black 171,C.I.335500

Molecular Structure: trisazo class

C.I.Direct Black 171,C.I.335500,CAS 135990-85-1,902.75,C37H25N10Na3O10S2,Duasyn Direct Black H,Duasyn Direct Black H-SF

Molecular Formula:C₃₇H₂₅N₁₀Na₃O₁₀S₂

Molecular Weight: 902.75

CAS Registry Number:135990-85-1

Manufacturing Methods : 2-(4-Aminophenyl)-3H-benzo[d]imidazol-5-amine double nitriding, and aniline diazo,In alkaline conditions with 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling product obtained under acidic conditions in the coupling , again with 2-(3-Hydroxyphenylamino)ethanesulfonic acid coupling.

Properties and Applications: black.

List of Suppliers:

Duasyn Direct Black H ( DyStar GmbH & Co Deutschland KG )

Duasyn Direct Black H-SF( DyStar GmbH & Co Deutschland KG )