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Sodium Silicofluoride

Na2SiF6 99.0% min. 
Free Acid(IN HCL)  0.10% max. 
Water Insoluble  0.40% max. 
Fe  0.02% max.. 
Heavy Metal (Pb)  0.02% max. 
Moisture  0.30% max. 
Less on ignition under 105 ºC 0.20% max 
Fineness  90% min. 
Packing:in plastic bags with outer plastic woven bags of 25/50/1000kgs net each.