| 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 |
