Name of indexes | FCC-V | USP-31 |
Appearance | White powder | White powder |
Assay (As CaHPO4), % | 97.0-105.0 | 98.0-103.0 |
Fluoride, ≤% | 0.005 | 0.005 |
Loss on drying, ≤% | 7.0-8.5 | 6.6-8.5 |
Heavy metals(As Pb), ≤% | - | 0.003 |
Pb, ≤% | 0.0002 | - |
As, ≤% | 0.0003 | 0.0003 |
Insoluble in HCI, ≤% | - | 0.2 |
Chloride, ≤% | - | 0.25 |
Sulphate (SO4), ≤% | - | 0.5 |
Carbonate | - | Test passed |
Barium | - | Test passed |