dye|World dye variety

Name:C.I.Direct Blue 72,C.I.34145

Molecular Structure: trisazo class

C.I.Direct Blue 72,C.I.34145,877.77,C36H22N7Na3O10S3,Diazol Light Blue B

Molecular Formula:C₃₆H₂₂N₇Na₃O₁₀S₃

Molecular Weight: 877.77

CAS Registry Number:

Manufacturing Methods : aniline diazo, and 5-Aminonaphthalene-2-sulfonic acid first coupling, again diazo, and 5-Aminonaphthalene-2-sulfonic acid second coupling, its product to diazo, in alkaline conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid third coupling.

Properties and Applications: dark blue to navy blue. Moderate soluble in water for violet black, also moderate soluble in alcohol. The strong sulfuric acid in dark green light for blue, diluted red for sauce. The dye solution to join strong hydrochloric acid have dark blue precipitation; Add thick sodium hydroxide solution generation dark purple precipitation. Mainly used for cellulose fiber dyeing, also used for paper color

List of Suppliers:

Diazol Light Blue B( Francolor Pigments SA )