|
Items |
Standards |
Results |
|
Appearance |
White or almost white crystalline powder |
Complies |
|
Assay |
≥98% |
99.8% |
|
pH |
2.3-2.4 |
2.38 |
|
Specific rotation |
+186.0°~+188.0° |
186.5° |
|
Melting Point |
158~163(±0.5)ºC |
158.6~160.5ºC |
|
Loss on drying |
≤1.0 |
0.11 |
|
Sulphated ash |
≤0.2 |
0.05 |
|
Free Glucose |
≤0.1 |
Complies |
|
Free Ascorbic Acid |
≤0.1 |
Complies |
|
Heavy Metals |
≤10ppm |
Complies |
|
Arsenic |
<1ppm |
Complies |
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