dye|World dye variety

Name:C.I.Direct Red 67,C.I.23505

Molecular Structure: Double azo class

C.I.Direct Red 65,C.I.17870,CAS 6598-56-7,724.72,C34H26N6Na2O6S2,Brilliant Purpurine 4B,Atul Cotton Red N

Molecular Formula:C₃₄H₂₆N₆Na₂O₆S₂

Molecular Weight: 724.72

CAS Registry Number:6598-56-7

Manufacturing Methods : 3,3′-Dimethylbenzidine double nitriding, respectively with the 4-Hydroxynaphthalene-1-sulfonic acid and 6-Aminonaphthalene-2-sulfonic acid coupling.

Properties and Applications: colourful red yellow light. Soluble in water for yellow light red, slightly soluble in ethanol in red. The strong sulfuric acid for violet blue, purple and blue after diluted precipitation. The dye solution to join strong hydrochloric acid for violet blue; Add thick more yellow sodium hydroxide solution.

List of Suppliers:

Atul Cotton Red N ( Atul Limited )

Brilliant Purpurine 4B( Aktiengesellschaft für Anilin-Fabrikation )