6-Amino-4-hydroxy-3-[[4-(sulfomethyl)phenyl]azo]-2-naphthalenesulfonic acid disodium salt Chemical Properties,Usage,Production
Preparation
(4-Aminophenyl)methanesulfonic acid?diazo, in alkaline conditions and 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling.
Properties and Applications
red light brown. Soluble in water for red orange brown. The strong sulfuric acid for red, diluted into orange. Adding strong hydrochloric acid in aqueous solution for orange; Add thick sodium hydroxide solution for orange brown.
![6-Amino-4-hydroxy-3-[[4-(sulfomethyl)phenyl]azo]-2-naphthalenesulfonic acid disodium salt Structure](https://www.chemicalbook.com/CAS/GIF/6360-14-1.gif)