Name:C.I.Direct Green 23,C.I.31985
Molecular Structure: trisazo class
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.
|Standard||Acid Resistance||Alkali Resistance||Light Fastness||Soaping||Water|
List of Suppliers:
Sirius Supra Olive GL( Bayer Group )