sodium hydrosulphide 68%, High Assay, Good color, competitive price sodium hydrosulphidePhysical and Chemical ... ) Appearance: Colorless or light yellow, volatile, flammable liquid. 2) Assay: 68% min. 3) Insolubles in Water: 0.005% max. 4) Fe ... ore. As sulfide dye agent in synthetic fibre. Sodium Hydrosulfide 68%