Appearance: black flakes or granula

Property: Black grain (powder), solublc in water.

It is black with green bright when soluble in sodium sulfide solution.

Usage: Mainly used for dyeingand winding dyeing on cotton, jute, viscose,

polyyinyl alcohol fibre and polyester, polyamide fibre,

especially used for rolling dyeing. It is uniform and stable in colour,

good permeability when dyeing without any frahile treatment.

It is also used for dyeing on Ieather and original viscose fibre.