dye|World dye variety

Name:C.I.Direct Blue 9,C.I.24155

Molecular Structure: Double azo class

C.I.Direct Blue 9,C.I.24155,CAS 6428-98-4,860.73,C34H23N4Na3O13S3,Direct Blue BN,Violet BC,Brilliant Violet B

Molecular Formula:C₃₄H₂₃N₄Na₃O₁₃S₃

Molecular Weight: 860.73

CAS Registry Number:6428-98-4

Manufacturing Methods : 3,3′-Dimethoxylbenzidine double nitriding, first and 3-Hydroxynaphthalene-2,7-disulfonic acid coupled , and then 4-Hydroxynaphthalene-1-sulfonic acid coupling.

Properties and Applications: blue. Soluble in water, soluble in alcohol. The strong sulfuric acid for blue, blue after diluted precipitation. The dye water solution is blue, to join the hydrochloric acid have precipitation of dark; Add sodium hydroxide solution for purplish red color.

List of Suppliers:

Atul Direct Blue BN ( Atul Limited )

Dyrite Violet BC 200%( Rite Industries Inc. )

Leadirect Brilliant Violet B Cone.200%( Leadertech Colors Inc. )

Orcomine Brilliant Violet B Conc( Organic Dyestuffs Corp )