| Testing Item | Standard | Result |
| Appearance | A white or almost white,crystalline powder or colourless crystals | Conform |
| Solubility | soluble in water,practically insoluble in alcohol | Conform |
| Content (on dry basis)/% | ≥98.5 | Conform |
| Specific Rotation | -26.7° ~ -29.6 ° | Conform |
| Loss on Drying/% | ≤1.0 | Conform |
| Residue on Ignition/% | ≤0.3 | Conform |
| Dust/% | ≤0.3 | Conform |
| Residue after Burning/% | ≤0.3 | Conform |
| Ammonium Salt/% | ≤0.04 | Conform |
| Heavy Metal(Pb)/% | ≤0.0030 | Conform |
| Arsenic(As)/% | ≤0.0010 | Conform |
| PH | 5.0~6.5 | Conform |
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