dye|World dye variety

Name:C.I.Direct Blue 12,C.I.24170

Molecular Structure: Double azo class

C.I.Direct Blue 12,C.I.24170,CAS 6428-97-3,773.7,C34H25N5Na2O10S2,Oxamine Blue B

Molecular Formula:C₃₄H₂₅N₅Na₂O₁₀S₂

Molecular Weight: 773.7

CAS Registry Number:6428-97-3

Manufacturing Methods : 3,3′-Dimethoxylbenzidine double nitriding, first in alkaline conditions and 8-Amino-4-hydroxynaphthalene-2-sulfonic acid, and then matches with 4-Hydroxynaphthalene-1-sulfonic acid coupling.

Properties and Applications: blue. Soluble in water for purple to red light blue. The strong sulfuric acid for green light blue, diluted into a red light purple; In nitric acid to yellow. The dye solution to join strong hydrochloric acid for blue purple; Add thick sodium hydroxide solution for purplish red color to red light purple.

List of Suppliers:

Oxamine Blue B( Badische Anilin-und Soda Fabrik )