disodium 5-[[4-[[6-[(4-amino-3-methylbenzoyl)amino]-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3-methylbenzoyl]amino]salicylate

3-Methyl-4-amino-3-carboxy-4′-hydroxybenzanilide diazo, and 7-(4-Amino-3-methylbenzamido)-4-hydroxynaphthalene-2-sulfonic acid?coupling.

red. Slightly soluble in water and red to blue light for Claret, soluble in ethanol for red orange. The strong sulfuric acid to red light purple, diluted red for quality. The dye solution with strong hydrochloric acid have Red sauce precipitation; Add thick sodium hydroxide solution for product red.

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