Acid Black 168

Preparation

–4-Amino-3-hydroxynaphthalene-1-sulfonic acid diazo, and Naphthalen-2-ol coupling, and then translate into 1:2 chromium complex.

Properties and Applications

black. Black powder, its water solution is blue. Used for wool, silk, tussah, polyamide, Polyvinyl alcohol, peacekeeping/cotton, wool/stick blended fabric dyeing and printing. But with the direct dyes with bath dyeing. Can also be used for leather dyeing.