ACID BLACK 58

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

blue ash. Used for wool, polyamide fiber, silk dyeing and printing, also used in leather color.

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