dye|World dye variety

Name:C.I.Direct Blue 183,C.I.31951

Molecular Structure: trisazo class

C.I.Direct Blue 183,C.I.31951,CAS 6416-69-9,907.84,C41H31N7Na2O11S2,Direct Blue 5GL,Diazo Blue 2B

Molecular Formula:C₄₁H₃₁N₇Na₂O₁₁S₂

Molecular Weight: 907.84

CAS Registry Number:6416-69-9

Manufacturing Methods :  3,3′-Dimethoxylbenzidine double nitriding,, And 4-Hydroxynaphthalene-1-sulfonic acid  coupling, and in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, the product is further diazotization and coupling of O-Anisidine .

Properties and Applications: blue.

List of Suppliers:

Diazo Blue 2B( Ciech SA )

Direct Blue 5GL(Sinochem Ningbo Imp & Exp Corp)