Physical properties: Whitish powder; Odorless; Soluble in diluted Hydrochloric Acid, Nitric Acid and Acetic Acid; Slightly soluble in water but insoluble in Ethanol; Stable in air; Relative density: 2.32.
|
Name of indexes |
FCC-Ⅳ |
USP-23 |
|
Appearance |
Whitish powder |
Whitish powder |
|
Assay (As CaHPO4), % |
97.0-105.0 |
98.0-105.0 |
|
Fluoride, ≤% |
0.005 |
0.005 |
|
Loss on drying, ≤% |
7.0-8.5 |
6.6-8.5 |
|
Heavy metals(As Pb), ≤% |
0.0015 |
0.0015 |
|
Pb, ≤% |
0.0002 |
- |
|
As, ≤% |
0.0003 |
0.0003 |
|
Insolubles in HCI, ≤% |
- |
0.2 |
|
Chloride, ≤% |
- |
0.25 |
|
Sulphate (SO4), ≤% |
- |
0.5 |
|
Carbonate |
- |
Test passed |
|
Barium |
- |
Test passed |