dye|World dye variety

Name:C.I.Direct Black 86,C.I.24115

Molecular Structure: Double azo class

C.I.Direct Black 86,C.I.24115,CAS 6449-34-9,772.72,C34H26N6Na2O9S2,Diazo Fast Black B

Molecular Formula:C₃₄H₂₆N₆Na₂O₉S₂

Molecular Weight: 772.72

CAS Registry Number:6449-34-9

Manufacturing Methods : 3,3′-Dimethoxylbenzidine double nitriding, first with 8-Aminonaphthalene-2-sulfonic acid coupling, and then in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid   coupling.

Properties and Applications:  blue and black. Soluble in water for violet black, soluble in ethanol purplish red color to red sauce. In the strong sulfuric acid as dark blue, for purple diluted. The dye solution with strong hydrochloric acid as dark blue, precipitation; Add thick sodium hydroxide solution for red sauce, precipitation.

List of Suppliers:

Diazo Fast Black B(  Bayer Group )