| ≥1 piece |
|
Test items |
Test Parameters |
|
Appearance |
White to slightly yellow crystalline power |
|
Identification |
Positive |
|
Specific optical rotation |
+103 º ~108 º |
|
Loss on drying |
≤0.25% |
|
Heavy metals |
≤0.001% |
|
Arsenic |
≤0.0003% |
|
mercury |
≤0.0001% |
|
Lead |
≤0.0002% |
|
Zinc |
≤0.0025% |
|
copper |
≤0.0005% |
|
PH (10%.w/v) |
7.0~8.0 |
|
Assay |
99.0~101.0% |