We are producer and exporter with stable supply of Sodium silicofluoride as follows, welcome your further inquiry. Specification: 1) Sodium fluorosilicate / Silicofluoride ( Na2SiF6) 99% min Molecular Weight: 188.06 U.N-NO.: 2674 Class: 6.1 2) Loss of weight on drying at 105 centigrade 0.30% max 3) Free acid( as HCl) 0.10% max 4) Chloride( as Cl-) 0.10% max 5) Sulphate( SO42-) 0.30% max 6) Iron( Fe) 0.02% max 7) Water-insoluble matter 0.4% max 8) Heavy metal ( as Pb) 0.02% max 9) Fineness 90% max Packing: 25kg and 50 kg plastic woven bag lined with high pressure polyethylene plastic bag. Delivery time - Within 15 days after received L/ C or T/ T. Usage: 1. Fluoridation of drinking water. 2. Laundry sours. 3. Opalescent glass. 4. Vitreous enamel frits. 5. Metallurgy of aluminium and verblium. 6. Insecticides and rodenticides. 7. Leather and wood preservatives. Contact Ms. Miranda Wuhan Xinru Chemical Industry Co., Ltd miranda@ whxinru.cn / / / mirandazpp@ hotmail.com