dye|World dye variety

Name:C.I.Direct Green 22,C.I.31775

Molecular Structure: trisazo class

C.I.Direct Green 22,C.I.31775,884.74,C39H23N6Na3O11S2

Molecular Formula:C₃₉H₂₃N₆Na₃O₁₁S₂

Molecular Weight: 884.74

CAS Registry Number:

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid, And then with 8-Aminonaphthalene-2-sulfonic acid coupling, its product to diazo, and 4,5Dihydroxynaphthalene-1-sulfonic acid  coupling.

Properties and Applications: dark green to olive green. Soluble in water for olive green, and adequate soluble in ethanol for green light. The strong sulfuric acid for violet black, diluted for Light gray Light green. The dye solution to join strong hydrochloric acid for olive; Add thick sodium hydroxide solution for olive brown.

List of Suppliers: