Acid Black 60

Preparation

3-Amino-4-hydroxy-N-methylbenzenesulfonamide diazo, and N-(7-hydroxynaphthalen-1-yl)acetamide coupling, and then turn it into 1:2 chromium complex.

Properties and Applications

blue ash. Blue-black powder. The strong sulfuric acid for red purple, pink to purple solution diluted; No change in strong hydrochloric acid, after dilution is light blue solution and accompanied by precipitation; In nitric acid for brown, diluted is shallow brown; No change in sodium hydroxide solution, diluted solution for blue. Water solution is blue light gray.

Standard	Light Fastness	Soaping		Persperation Fastness	Oxygen bleaching		Fastness to seawater
		Fading	Stain		Fading	Stain	Fading	Stain
ISO	6-7	4-5	5	5	4	5	5	5