dye|World dye variety

Name:C.I.Acid Brown 235

Molecular Structure: Multi-azo class

C.I.Acid Brown 235,CAS 12269-90-8/116628-42-3,922.79,C34H22N10O16S3,Intrapel Dark Brown DGR

Molecular Formula:C₃₄H₂₂N₁₀O₁₆S₃

Molecular Weight: 922.79

CAS Registry Number: 12269-90-8/116628-42-3

Manufacturing Methods :   4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid diazo, Coupled with resorcinol; 4-Nitrobenzenamine and 4-nitro-4′-aminoazobenzene-2-sulfonic acid diazo, respectively, and the above product matches.

Properties and Applications: dark brown. Mainly used for leather shading.

List of Suppliers:

Intrapel Dark Brown DGR( Yorkshire Group pic )