dye|World dye variety

Name:C.I.Acid Red 157,C.I.17990

Molecular Structure: Single azo class

C.I.Acid Red 157,C.I.17990,CAS 6417-35-2,710.69,C31H28N4Na2O9S2,Supranol Brilliant Red G

Molecular Formula:C₃₁H₂₈N₄Na₂O₉S₂

Molecular Weight: 710.69

CAS Registry Number:6417-35-2

Manufacturing Methods : p-Amino-N-cyclohexylacetanilide diazo, and  4-Benzamido-5-hydroxynaphthalene-1,7-disulfonic acid coupling.

Properties and Applications: red. Soluble in water for red orange, and adequate soluble in ethanol for orange. The strong sulfuric acid for cherry red, diluted into orange. In water solution to join strong hydrochloric acid have orange precipitation, add sodium hydroxide solution for orange brown.

List of Suppliers:

Supranol Brilliant Red G( Bayer Group )