Product Sodium hydrosulfide CAS No. 16721-80-5 UN No. 2949 Dangerous Goods Class 8 Pack Group II Appearance Yellow chips or flakes with a rotten egg-like odour. Package 25kg/900kg pp woven bag Usage 1,Mining industry , is used extensively for copper flotation. 2,Dye industry. 3,Leather industry . 4,Fertilizer industry. Storage Store in a dry, well ventilated area. Keep away from heat sources, ignition sources. Specification Item Standards Result NaHS (%) 70.0 Min 70.3 Na2S (%) 1.5 Max 1.1 Na2SO3 (%) 1.0 Max 0.9 Fe (%) 0.003 Max 0.0029 NaCO3 (%) 0.6Max 0.5 Matter insoluble in water (%) 0.005Max 0.004
industrial or food grade