dye|World dye variety

Name:C.I.Direct Black 30,C.I.23675

Molecular Structure: Double azo class

C.I.Direct Black 30,C.I.23675,CAS 6459-98-9,782.75,C36H28N6Na2O8S2,Azo Black Blue B

Molecular Formula:C₃₆H₂₈N₆Na₂O₈S₂

Molecular Weight: 782.75

CAS Registry Number:6459-98-9

Manufacturing Methods : 3,3′-Dimethylbenzidine double nitriding, in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, and then in alkaline conditions and 3-(Phenylamino)phenol coupling.

Properties and Applications:  black. Soluble in water for violet black, slightly soluble in ethanol for red light purple. The strong sulfuric acid for blue, for purple diluted. The dye solution to join strong hydrochloric acid for purple, have precipitation; With strong sodium hydroxide solution for red sauce, precipitation.

List of Suppliers:

Azo Black Blue B( Chemische Fabrik Griesheim-Elektron )