dye|World dye variety

Name:C.I.Direct Blue 8,C.I.24140

Molecular Structure: Double azo class

C.I.Direct Blue 8,C.I.24140,CAS 2429-71-2,758.69,C34H24N4Na2O10S2,Direct Blue G,Pontamine Blue AX

Molecular Formula:C₃₄H₂₄N₄Na₂O₁₀S₂

Molecular Weight: 758.69

CAS Registry Number:2429-71-2

Manufacturing Methods : 3,3′-Dimethoxylbenzidine  double nitride, and 4-Hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled.

Properties and Applications: blue. Soluble in water for purple red to blue, soluble in soluble fiber element, soluble in ethanol, insoluble in other organic solvents. The strong sulfuric acid for blue, blue for red after diluted. The dye solution to join strong hydrochloric acid for purple, have precipitation; Add thick sodium hydroxide solution for red light purple.

List of Suppliers:

Atul Direct Blue G ( Atul Limited )

Blue G(United Chemie)

Dinamine Blue [G](Dintex Dyechem Ltd)

Direct Blue G (Amar Impex)

Pontamine Blue AX(Classic Dyestuffs Inc)