dye|World dye variety

Name:C.I.Direct Black 141,C.I.31546

Molecular Structure: trisazo class

C.I.Direct Black 141,C.I.31546,CAS 12239-88-2,755.69,C32H23N9Na2O7S2,Chlorazol Black PB

Molecular Formula:C₃₂H₂₃N₉Na₂O₇S₂

Molecular Weight: 755.69

CAS Registry Number:12239-88-2

Manufacturing Methods :  N-(4-aminophenyl)acetamide diazo, first and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid  coupling, product to diazo, and 5-Aminonaphthalene-2-sulfonic acid and 8-Aminonaphthalene-2-sulfonic acid hydrolysis product, acylation coupled amino, again diazotization and Benzene-1,3-diamine coupling.

Properties and Applications: black.

List of Suppliers:

Chlorazol Black PB ( Imperial Chemical Industries )