Preparation
4-(4-Aminophenyl)benzenamine (70%) and 4-(4-Amino-2-methylphenyl)-3-methylbenzenamine double nitriding, in acid conditions coupled with 4-Amino-5-hydroxynaphthalene-2,7-disulfonic acid, 2-Aminobenzenesulfonic acid diazo, in alkaline conditions and the above the products of coupling, and then and Quinoline-2,4-diol coupling.
Properties and Applications
green and black. Soluble in water for violet and grey or black. The strong sulfuric acid for navy, for violet after diluted. The dye solution to join strong hydrochloric acid purple ash brown precipitation; With strong sodium hydroxide solution have dark precipitation.
