dye|World dye variety

Name:C.I.Direct Green 8,C.I.30315

Molecular Structure: trisazo class

C.I.Direct Green 8,C.I.30315,CAS 5422-17-3,878.69,C35H21N8Na3O12S2,Direct Green G

Molecular Formula:C₃₅H₂₁N₈Na₃O₁₂S₂

Molecular Weight: 878.69

CAS Registry Number:5422-17-3

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and 4-Nitrobenzenamine diazo, in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acidand coupled the product of three, and then and 2-Hydroxybenzoic acid coupling.

Properties and Applications: dark green. Soluble in water for the green, slightly soluble in ethanol, acetone, soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid as dark blue light in purple, for dark olive green after diluted. The dye solution to join strong hydrochloric acid have blue light green precipitation; Add thick sodium hydroxide solution have yellow olive green precipitation; Add 10% sodium hydroxide solution for SAP green.

List of Suppliers:

Atul Direct Green G ( Atul Limited )

Bitamine Direct Green G ( Bharat Texdyes Industries )

Cotton Green G( ellenic Dyeworks SA )

Direct Green G (Colorom SA)

Direct Green G ( Golden Dyes Corpn (India) Pvt Ltd )

Direct Green G ( KCA Ltd )

Vopsider Green DG(Colorom SA)