dye|World dye variety

Name:C.I.Direct Blue 168,C.I.24185

Molecular Structure: Double azo class

C.I.Direct Blue 168,C.I.24185,CAS 3818-60-8,849.8,C40H29N5Na2O10S2,Direct Copper Blue 2B,Direct Copper Blue RR,Direct Blue Light Fast G

Molecular Formula:C₄₀H₂₉N₅Na₂O₁₀S₂

Molecular Weight: 849.8

CAS Registry Number:3818-60-8

Manufacturing Methods :  3,3′-Dimethoxylbenzidine double nitriding, first with 4-Hydroxynaphthalene-1-sulfonic acid conditions and 4-Hydroxy-7-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications: red light blue. Dark blue uniform powder. Soluble in water for deep purple, and adequate soluble in ethanol for red light purple. The strong sulfuric acid for Tracy in blue, and in purple for diluted. The dye solution to join strong hydrochloric acid for purple, have precipitation; Add thick, hydrogen oxidation solution into a red wine. Mainly used for cotton, hemp, such as glue of cellulose fiber dyeing, also can be used for silk, polyamide fiber and stick/jin blended fabric dyeing.

List of Suppliers:

Atul Direct Copper Blue RR( Atul Limited )

Concorde Direct Copper Blue 2B ( I-HWA Industrial Corp )

Dinamine Copper Blue RR (Dintex Dyechem Ltd)

Direct Blue Light Fast G ( Joint Stock Company ‘Coioros’ )

Kayaku Direct Copper Blue 2B(Nippon Kayak u Co Ltd)

Mitsui Direct Copper Blue 2B( Mitsui Toatsu Chemicals Ltd )