| Characteristics: | White crystalline powder |
| Identification: | Positive reaction |
| Melting point: | ≈190℃ |
| PH: | 2.1-2.6 |
| Clarity of solution: | Pass |
| Color of solution: | ≤BY7 |
| Copper salt: | ≤5ppm |
| Lead: | ≤2ppm |
| Heavy metal: | ≤10ppm |
| Ferrite: | ≤2ppm |
| Lead: | ≤2ppm |
| Oxalate: | ≤0.2% |
| Sulfated ash: | ≤0.1% |
| Specific rotation: | +20.5º- +21.5º |
| Assay: | 99.0%- 100.5% |
| Organic volatile impurities: | Pass |
