dye|World dye variety

Name:C.I.Direct Green 23,C.I.31985

Molecular Structure: trisazo class

C.I.Direct Green 23,C.I.31985,CAS 13102-26-6,1148.00,C45H33N7Na4O16S4,Sirius Supra Olive GL

Molecular Formula:C₄₅H₃₃N₇Na₄O₁₆S₄

Molecular Weight: 1148.00

CAS Registry Number:13102-26-6

Manufacturing Methods : 2-(2-Sulfo-4-nitrostyryl)-5-aminobenzenesulfonic acid diazo, coupled with phenol, then methylation, will the Nitro reduction, product diazo, and 5-Amino-7-ehtoxy-2-naphthalenesulfonic acid coupling, its product to diazo, and 8-Acetamido-1-naphthol-5-sulfonic acid coupling, and finally into copper complex. In the copper complexation processes, ethoxy group may be substituted with hydroxy.

Properties and Applications:  olive green. Soluble in water for Yellow olive green, not soluble in alcohol. The strong sulfuric acid to red light brown, diluted red for sauce. The dye solution with strong hydrochloric acid have blue-ray gray precipitation; Add thick sodium hydroxide solution have olive green precipitation.

List of Suppliers:

Sirius Supra Olive GL( Bayer Group )