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Reagent grade ammonium bifluoride
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Executive standard: GB/T1278-1994 |
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Item |
Index |
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Analytical reagent |
Chemical pure |
|
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Ammonium bifluoride content (NH4HF4) ％ ≥ |
98.0 |
97.0 |
|
Ignition residue (Sulfate), ％ ≤ |
0.01 |
0.05 |
|
Chloride (C1), ％ ≤ |
0.001 |
0.005 |
|
Sulfate (SO4) ％ ≤ |
0.005 |
0.01 |
|
Fluosilicate (SiF6), ％ ≤ |
0.2 |
0.5 |
|
Iron (Fe), ％ ≤ |
0.001 |
0.005 |
|
Heavy metal (Pb), ％ ≤ |
0.002 |
0.005 |