12217-22-0

1-Amino-4-bromo-9,10-dioxo-9,10-dihydroanthracene-2-sulfonic acid and N-(4-aminophenyl)acetamide condensation, hydrolysis, and then with chloroacetyl chloride condensation.

dark blue powder. Soluble in water, slightly soluble in acetone. The strong sulfuric acid for blackish green color, dilute blue precipitation, after ‘on strong hydrochloric acid in no change, diluted precipitation is light blue; In nitric acid for yellow brown, diluted into golden solution; In the thick of sodium hydroxide solution without change, diluted into sky blue solution, accompanied by precipitation. The water solution is blue. Used for wool, silk, polyamide fiber and blended fabric dyeing and printing, also can be used for leather dyeing.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	6	3-4	3-4	3-4	4	3	4-5	4-5