dye|World dye variety

Name:C.I.Direct Blue 166,C.I.23165

Molecular Structure: Double azo class

C.I.Direct Blue 166,C.I.23165,CAS 6599-18-4,760.66,C32H22N6Na2O10S2,Cuprophenyl Brilliant Blue 2GL

Molecular Formula:C₃₂H₂₂N₆Na₂O₁₀S₂

Molecular Weight: 760.66

CAS Registry Number:6599-18-4

Manufacturing Methods : 2-Amino-5-(4-amino-3-hydroxyphenyl)phenol double nitriding, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid (2 Moore) coupled.

Properties and Applications:  bright blue. Soluble in water for Red violet color. The strong sulfuric acid in blue, diluted for purple; Add 10% sodium bicarbonate solution for red jade.

List of Suppliers:

Cuprophenyl Brilliant Blue 2GL( Geigy Co. Ltd )