dye|World dye variety

Name:C.I.Direct Green 43,C.I.34280

Molecular Structure: trisazo class

C.I.Direct Green 43,C.I.34280,930.83,C39H25N8Na3O10S3,Diazo Fast Green BL

Molecular Formula:C₃₉H₂₅N₈Na₃O₁₀S₃

Molecular Weight: 930.83

CAS Registry Number:

Manufacturing Methods : 5-Acetamido-8-amino-2-naphthalenesulfonic acid diazo, and 5-Aminonaphthalene-2-sulfonic acid coupling, again diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling, its product to diazo, and 2-Methyl-2H-indazole coupling, and then hydrolysis acetyl amino.

Properties and Applications: dark blue light green. Soluble in water for dark green light grey-blue, soluble in ethanol.concentrated sulfuric acid in light gray black, Gray light purple for diluted. The dye solution to join strong hydrochloric acid have blue-ray black precipitation, add thick sodium hydroxide solution for red light blue-black, precipitation.

List of Suppliers:

Diazo Fast Green BL( Bayer Group )