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Hydrofluoric acid
Molecular formula HF
Molecular weight 20.01
CAS    NO 7664-39-3
Characters Colorless transparent smoking liquid
Use Used to test silicon, metallurgy analysis, etc.
Specification Analytically pure 40%-50%, chemically pure40%-50%, industrial grade20%-50%
Executive standard GB/T 620-1993.
Technical index
Name
Excellent grade pure(%)
Analytically pure (%)
Chemically pure(%)
Ignition residue(Sulfate)
≤0.001
≤0.002
≤0.01
Chloride(Cl)
≤0.0005
≤0.001
≤0.005
Sulfate and sulfite(SO4)
≤0.001
≤0.002
≤0.005
Phosphate(PO4)
≤0.0001
≤0.0002
≤0.0005
Fluosilicate (SiF6)
≤0.02
≤0.04
≤0.06
Ferrum(Fe)
≤0.00005
≤0.0001
≤0.0005
Heavy metal(Pb)
≤0.0001
≤0.0005
≤0.001
Packing 500ml for bottle packing, 25kg for pail packing.
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