sodium fluorosilicate CAS 16893-85-9

Property: It is colorless hexagonal, odorless and tasteless crystal with relative density 2.679. It is hygroscopic. It is soluble in ether, insoluble in alcohol. The solubility in acid is greater than in water. It decomposes in alkaline solution and produces sodium fluoride and silicon dioxide. It is decomposed to sodium fluoride and silicon tetrafluoride by heating to 300℃. It is noxious!
Specification:
Sodium fluorosilicate (based on dry)
99.0%min
Iron(Fe)
0.02%max
Free acid(based on HCI)
0.1%max
Water-insoluble matter
0.40%max
Loss on Drying at 105℃
0.3%max
Fineness(through 250μm test bolter)
90%min
Heavy metal(based on Pb)
0.02%max
Usage: It is used as antiseptic in timber industry, hygroscopic agent of acid-resisting concrete, solidifying agent in natural latex products, additive in plating with zinc, nickel, iron and filler in plastic and fluorinating agent in pharmaceuticals and drinking water. It is used to produce insecticide in pesticide industry and sodium fluoride in man-made cryolite.
Packing: In 25kg plastic woven bag lined with high pressure polyethylene plastic bag.