Original
 |
Melatonin intermediate: |
|
|
Standard |
Typical measured values |
|
Identification |
IR, NMR |
pass |
|
Appearance |
White crystals or crystalline powder |
pass |
|
Assay (TLC) |
≥99 |
≥ 99 |
|
Water |
≤0.5% |
0.12% |
|
Residue on ignition |
≤0.5% |
0.08% |
|
Heavy metal |
≤10ppm |
≤10ppm |
|
As |
≤2ppm |
≤10ppm |
|
Packaging |
25KG/drum |
