dye|World dye variety

Name:C.I.Direct Green 19,C.I.30305

Molecular Structure: trisazo class

C.I.Direct Green 19,C.I.30305,CAS 6486-58-4,817.76,C38H25N7Na2O8S2,Benzo Dark Green GG

Molecular Formula:C₃₈H₂₅N₇Na₂O₈S₂

Molecular Weight: 817.76

CAS Registry Number:6486-58-4

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first in acid conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, Naphthalen-1-amine again diazo, in alkaline conditions and formation of accidentally coupled nitrogen compounds, and then coupled with phenol.

Properties and Applications: dark green. Soluble in water for the green, and adequate soluble in ethanol is green. The strong sulfuric acid is a deep in the navy, diluted for light gray. The dye solution to join strong hydrochloric acid for a dark grey light green, precipitation, add thick sodium hydroxide solution have olive green precipitation.

List of Suppliers:

Benzo Dark Green GG ( Bayer Group )