|
Items |
Standards |
|
Appearance |
colorless to white crystals |
|
Content |
≥98.0-101.0% |
|
Loss on drying |
37.4-41.1% |
|
PH value |
7-9 |
|
Sulfate |
≤0.015 |
|
Heavy metals(Pb) |
≤0.001 |
|
Asenic(As2O3)% |
≤0.0002 |
|
Readily oxidizable substance |
not disappear within 3 min |
| Conclusion | Conform |