| ≥1 piece |
|
Name of index |
GB1889-2004 |
FCC-IV |
|
Appearance |
White powder |
White powder |
|
Content£¨As CaHPO4·2 H2O£?£?% |
98.0??103.0 |
97.0??105.0 |
|
Loss on ignition£?% |
2 4.5??26.5 |
2 4.5??26.5 |
|
Heavy metal£¨As Pb£?£?% |
≤0.001 |
≤0.0015 |
|
Pb, %
|
≤0.0005
|
≤0.0002
|
|
Arsenic (As)£?% |
≤0.0002 |
≤0.0003 |
|
Fluorides£¨As F£?£?% |
≤0.005 |
≤0.005 |
|
Acid-insoluble Substances£?% |
≤0.05 |
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