2-Naphthalenesulfonic acid, 7-[(4-aminobenzoyl)amino]-3-[[4-[(2,4-dimethyl-6-sulfophenyl)azo]-2-methoxy-5-methylphenyl]azo]-4-hydroxy-, disodium salt

2-Amino-3,5-dimethylbenzenesulfonic acid diazo, and 2-Amino-4-methylanisole coupling, its product to diazo, and 7-(4-Aminobenzamido)-4-hydroxynaphthalene-2-sulfonic acid coupling.

dark purple. Soluble in water for purplish red color, soluble in ethanol for product red. The strong sulfuric acid in dark green light for blue, for purple diluted. The dye solution with strong hydrochloric acid have precipitation of dark; Add thick sodium hydroxide solution for dark purple.

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	2-3	4	4	4		4