5-Amino-2-methoxybenzenesulfottic acid diazotization, and 2-Hydroxybenzoic acid coupling.
Properties and Applications
green yellow. Soluble in water for yellow. In concentrated sulfuric acid for orange; In concentrated nitric acid for orange; In a dilute Sodium hydroxide solution for deep yellow solution.
![Benzoic acid,2-hydroxy-5-[2-(4-methoxy-3-sulfophenyl)diazenyl]-, sodium salt (1:2) Structure](/CAS/20211123/GIF/6470-99-1.gif)