Quality Standard: (Enterprise Standard) |
Item |
Index |
Appearance |
white crystalline powder |
Purity |
≥98% |
Water content |
≤1% |
Specific optical rotation |
-21.5o~-23.5o |
pH (1% aqueous solution) |
2.3~2.6 |
Heavy metal (base on Pb) |
≤0.002% |
Arsenic (base on As) |
≤0.0002% |
Residue on ignition |
≤0.5% |
|
Properties: |
white crystalline powder, easily soluble in water, slightly soluble in ethanol, insoluble in acetone, easy to deliquesce and turn yellow. |
Application: |
medicine, health food additive, feedstuff additive. |
Packing: |
25KG carton drum or in accord with cilent's requirements. |