Preparation
4-Aminobenzenesulfonic acid diazotization, and Naphthalen-2-ol coupling, and then will product C.I. acid Orange 7 into amine condensation compound.
Properties and Applications
brilliant red light orange. Soluble in water for red light yellow, soluble in ethanol for orange. In concentrated sulfuric acid for magenta, dilution after the light yellow precipitation. Dye aqueous solution to join hydrochloric acid have tan light color precipitation; Add sodium hydroxide as dark brown.
