Product Name: Sodium Sulphide Place of Origin: China Specifications: Sodium sulphide red flake 1) Na2S: &gr;60% 2) Fe: ≤0.15% (1,500ppm) 3) Na2CO3: ≤5.0% 4) Water insoluble: ≤0.4% Sodium sulphide yellow flake low iron: 1) Na2S: ≥60% 2) Fe: a) ≤0.015% (150ppm) b) ≤0.012% (120ppm) c) ≤0.01% (100ppm) d) ≤0.008% (80ppm) e) ≤0.005% (50ppm) f) ≤0.003% (30ppm) g) ≤0.0010% (10ppm) 3) Na2CO3: ≤2.0% 4) Na2SO3: ≤2.00% 5) Na2S2O3:≤2.00% 6) Water insoluble: ≤0.2% Uses: Used as making sulphur dyes or dyestuff intermediate reducers, mordant, flotation agent, depilatory for leather, digestion auxiliary in paper-making, also widely used in pigment and rubber industry. Packing: 25kg plastic woven bag