dye|World dye variety

Name:C.I.Direct Brown 151,C.I.31685

Molecular Structure: trisazo class

C.I.Direct Brown 151,C.I.31685,CAS 10130-38-8,796.74,C34H26N10Na2O7S2,Para Brown V

Molecular Formula:C₃₄H₂₆N₁₀Na₂O₇S₂

Molecular Weight: 796.74

CAS Registry Number:10130-38-8

Manufacturing Methods :  4-(4-Aminophenyl)benzenamine double nitriding, in alkaline conditions before 3-Amino-5-hydroxynaphthalene-2,7-disulfonic acid coupling, product to diazo, and Benzene-1,3-diamine (2 Moore) coupled.

Properties and Applications: dark red light brown. Slightly soluble in water for red sauce, soluble in ethanol. In the dark for the strong sulfuric acid, diluted light for palm gray, with black precipitation. The dye solution with strong hydrochloric acid has the purple precipitation; With strong sodium hydroxide solution for red to blue light is red.

List of Suppliers:

Para Brown V( Bayer Group )