| Molecular formula |
NH4F |
| Molecular weight |
37.04 |
| CAS NO |
12125-01-8 |
| Characters |
White crystal |
| Use |
Used as precipitant, glass carve, etc. |
| Specification |
Excellent grade pure, Analytically pure , chemically pure |
| Executive standard |
GB/T 1276-1999 |
| Technical index |
|
Name
|
Excellent grade pure(%)
|
Analytically pure (%)
|
Chemically pure(%)
|
|
Content(NH4F)
|
≥96.0
|
≥96.0
|
≥95.0
|
|
Clarity test
|
qualified
|
qualified |
qualified |
|
Ignition residue(Sulfate)
|
≤0.005
|
≤0.02
|
≤0.05
|
|
Free acid(NH4HF2)
|
≤0.2
|
≤0.5
|
≤1.0
|
|
Free alkali
|
qualified
|
qualified |
qualified |
|
Chloride(Cl)
|
≤0.0005
|
≤0.005
|
≤0.01
|
|
Sulfate(SO4)
|
≤0.005
|
≤0.01
|
≤0.02
|
| Fluosilicate (SiF6) |
≤0.08 |
≤0.30 |
≤0.60 |
| Ferrum(Fe) |
≤0.0005 |
≤0.002 |
≤0.004 |
| Heavy metal(Pb) |
≤0.0005 |
≤0.001 |
≤0.002 |
|
| Packing |
500kg for bottle packing, 40kg for pail packing, 25kg for paper plastic packing |
