dye|World dye variety

Name:C.I.Direct Brown 127,C.I.35210

Molecular Structure: Multi-azo class

C.I.Direct Brown 127,C.I.35210,CAS 6473-10-5,915.87,C40H31N13Na2O7S2,Diazo Brown G

Molecular Formula:C₄₀H₃₁N₁₃Na₂O₇S₂

Molecular Weight: 915.87

CAS Registry Number:6473-10-5

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, first in alkaline conditions and 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, and then and C.I. Basic Brown 1 (with 2 moles of nitrous acid treatment with 3 moles of  Benzene-1,3-diamine dihydrochloride derived) coupled.

Properties and Applications: black light brown. Moderate soluble in water for violet black, soluble in ethanol for shallow violet brown. The strong sulfuric acid for blue-ray black, diluted for shallow violet brown. Dye with strong hydrochloric acid solution for red sauce; Add thick sodium hydroxide solution for sauce also red.

List of Suppliers:

Diazo Brown G( Bayer Group )