| ITEM | SPECIFICATION |
| Appearance | White or almost white needle crystal powder, no odor, easily soluble in water, no impurities visible to normal vision |
| Loss on drying | ≤ 0.5 % |
| Sulfate Ash | ≤ 0.1 % |
| Specific optical rotation[a]D20° | + 102.0 ° ~+ 105.0 ° |
| Melthing point | 154.0ºC~160.0ºC |
| Chloride (Cl) | ≤0. 005 % |
| Sulfate (SO4) | ≤0. 005 % |
| Assay | 99.0%~102.0% |
| Package | 25kg/ Bag |
| Storage condition | Store in a well closed place with constant low temperature and no direct sun light |
| Shelf life | Two year s when properly stored |