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Ammonium silicofluoride
Molecular formula (NH4)2SiF6
Molecular weight 178.15
CAS    NO 16919-19-0
Characters Colorless crystal powder
Use Used for carving, pesticide and hot welding flux.
Specification Analytically pure , chemically pure
Executive standard Enterprise standard
Technical index
Name
Analytically pure (%)
Chemically pure(%)
Water solubility
qualified
qualified
Chloride(Cl)
≤0.005
≤0.02
Sulfate(SO4)
≤0.01
≤0.05
Carbonate(CO3)
≤0.01
—
Free acid
≤0.5
—
Heavy metal(Pb)
≤0.005
≤0.01
Ferrum(Fe)
≤0.005
≤0.01
Packing 500kg for bottle packing, 40kg for pail packing, 25kg for paper plastic packing
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