sodium hydrosulphide 68%, High Assay, Good color, competitive price sodium hydrosulphidePhysical and ... Appearance: Colorless or light yellow, volatile, flammable liquid. 2) Assay: 68% min. 3) Insolubles in Water: 0.005% max. 4) Fe: 0 ... % max. 5) Na2S: 2.0% min. 6) Na2SO3 1.0% min. 7) Na2CO3 0.6% min. 9) Packing: Woven bag lined with ... . As sulfide dye agent in synthetic fibre. Sodium Hydrosulfide 68%