|
No. |
Item |
Standard (GB2023-2003) |
Test Result |
|
1 |
Molecular Weight |
≥85% |
90.08 |
|
2 |
Stereochemical purity (L-isomer) |
≥95% |
≥95% |
|
3 |
Assay |
≥80% min |
82.50% |
|
4 |
Color |
≤150 Apha |
≤100 Apha |
|
5 |
Sulphates |
≤10ppm |
﹤10ppm |
|
6 |
Chlorides |
≤10ppm |
﹤10ppm |
|
7 |
Residue on ignition |
≤0.05% |
﹤0.05% |
|
8 |
Iron |
≤10ppm |
﹤10ppm |
|
9 |
Total heavy metals |
≤10ppm |
﹤10ppm |
|
10 |
Lead |
≤1ppm |
﹤1ppm |
|
11 |
Arsenic |
≤1ppm |
﹤1ppm |
|
12 |
Mercury |
≤1ppm |
﹤1ppm |
|
13 |
Cyanide |
≤1ppm |
﹤1ppm |
|
14 |
Citric acid, oxalic acid, phosphoric acid,tartaric acid. |
Qualified |
Qualified |