|
Item |
Specification |
Result |
|
Appearance |
White crystalline powder |
Conforms |
|
Assay |
≥96.0% |
99.5% |
|
pH |
3.5-5.5 |
4.2 |
|
Heavy metal |
≤20ppm |
5ppm |
|
Water |
12.0-15.0% |
13.0% |
|
Residue on ignition |
≤0.5% |
0.05% |