We've beensupplying Sodium Sulphide 60%MIN regularly for years. The specification forsolid is as following: ITEM SPECIFICATIONNa2S60% MINFe0.15% MAXNa2SO32.00% MAXNa2S2O32.00% MAXNa2CO35.0% MAXWATER INSOLUBLE0.4% MAX
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