N-(4-aminophenyl)acetamide diazo, and 4-Hydroxy-5-(phenylsulfonamido)naphthalene-2,7-disulfonic acid?coupling.
Properties and Applications
red light purple. Soluble in water and ethanol for product red. The strong sulfuric acid for brick red; For product red after diluted. In water solution to join strong hydrochloric acid for product red, add thick sodium hydroxide solution for product red.
