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4-Aminobenzenesulfonic acid diazo, and 2-Amino-4-methylanisole coupled to compounds (A); 4-Nitrobenzenamine diazo, coupled with 2-Hydroxybenzoic acid, and then will the nitro reduction for amino, compound (B). Then will molecules of the A and B mixture light gasification.

red light yellow. Soluble in water for golden brown, slightly soluble in alcohol. The strong sulfuric acid for blu-ray red, diluted becomes shallow, with brown precipitation. The dye solution to join strong hydrochloric acid have sauce red precipitate; Add thick sodium hydroxide solution with gold orange precipitation. Used for cellulose fabric, silk, polyamide fiber fabric dyeing and printing, paper color

Standard	Acid Resistance	Alkali Resistance	Light Fastness	Soaping		Water
				Fading	Stain	Fading	Stain
ISO	3	4	5	2-3		2
AATCC	5	5	4	1		3