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Ammonium fluoride
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
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