| ≥1 piece |
Melatonin 99% by HPLC
Delivery on time
Professional service,strictly QC/QA system
GMP+KOSHER+HALAR+ISO9001
|
Item
|
Specification |
Results |
|
Assay(MELATONIN 99% by HPLC) |
≥ 99.0 % |
99.45% |
|
Appearance |
A white or pale-white crystalline powder, odorless |
Complies |
|
Loss on drying |
0.5%MAX |
0.17% |
|
Identification |
Positive reaction |
Complies |
|
Residue on ignition |
0.1%MAX |
0.07% |
|
Melting point |
117~120°C |
118~119.5°C |
|
Heavy metal |
10ppm MAX |
Complies |
|
Clarity and degree of opalescence of liquids |
1% ethanol and chloroform solution |
Complies |
|
Particle size |
80-120 mesh |
Conforms |
|
Individual |
0.5% MAX |
0.2% |
Total |
1.0% MAX |
0.42% |
yeast & mold |
<100/ g |
Conforms |
E.coil |
Negative |
Negative |
Salmonelia |
Negative |
Negative |