N-(4-aminophenyl)acetamide diazo, and Naphthalen-1-amine coupling, its product to diazo, and 3-Hydroxynaphthalene-2,7-disulfonic acid coupling, and then acetyl hydrolysis.
Properties and Applications
black. Soluble in water for blue-ray black. The strong sulfuric acid for green, a red after diluted. In water solution to join hydrochloric acid as a red; Add sodium hydroxide discoloration.
