3-(Dimethylamino)phenol?and Phthalic anhydride condensation, then product and 2,4-Dihydroxybenzenesulfonic acid?condensation.
Properties and Applications
blue light pink. Soluble in water for brilliant red, with intense yellow fluorescence. In concentrated sulfuric acid for lemon yellow, with green fluorescent, dilution after orange red, and then into a peach. Dye aqueous solution to join concentrated hydrochloric acid fluorescence disappear.
