The Sulphur Black Powder is mainly used for dyeing cellulose fibers, staple fibers and yarn. Sulphur Black Powder, that we offer, is widely used for jigger, winch and for package dyeing of cotton & viscose-rayon. Sulphur Black Powder works perfectly with black color and gives excellent color and light fastness. From the name, it is clear that Sulphur Black Powder contains little amount of sulphuric acid. The fibers