in reflux conditions, sodium hydroxide solution in 1,2-Bis(4-nitro-2-sulfophenyl)ethane sodium salt between two with 3-Aminobenzenesulfonic acid sodium diazotization and?2,5-Dimethylbenzenamine coupled with heating products.
Properties and Applications
red light orange. Soluble in water for yellow, slightly soluble in ethanol is palm red light, slightly soluble in acetone is palm yellow light. The strong sulfuric acid for purple; In strong hydrochloric acid for brown in the light yellow solution.
