Sodium sulfide Formula:Na2S CAS: 1313-82-2 HS: 28301090 UN: 1849 Appearance: Yellow-brown flakes Package: 25kg per woven bag Application: Mainly used as flotation agent in Metallurgy, leather industry In leather industry, it is used for processing natural leather Used in the dyestuff industry to produce sulphur dyes SPECIFICATION CONTENT Na2S 60 Fe 0.03 Na2CO3 5.0 Water insoluble substance, 0.02