| ITEMS | Standards |
| Assay %≥ | 99.0-100.5 |
| Solution Chroma(Hazen) ≤ | 20 |
| Appearance of Solution | Pass the test |
| Readily Oxidizable Substance | Pass the test |
| Acidity and Alkalinity | Pass the test |
| Heavy Metal(Pb) %≤ | 0.001 |
| Sulfate(So4) %≤ | 0.01 |
| Chloride( Cl) %≤ | 0.002 |
| Phthalic acid %≤ | 0.0015 |
| Loss on Drying %≤ | 1.5 |
