Vitamin B12 (Cyanocobalamin)
City: LV, Marupe
Please avoid sudden changes in temperature and humidity, as they may affect the condition of derivative ingredients and tablets.
The shelf life begins from the date of manufacture at the factory.
Taking into account logistical and transportation stages, the remaining shelf life of the product is always shorter than the full shelf life.
We ship products to our customers with a remaining shelf life of no less than 70%.
Physical & Chemical Characteristics
| Analysis Item | Specification | Result |
| Appearance | Dark red crystalline powder | Complies |
| Loss on drying | <10.0>#/td### | 3.45>#/td### |
| Total impurities (HPLC) | <3.0>#/td### | 0.9>#/td### |
| Assay (Cyanocobalamin) | 97.0%~102.0>#/td### | 98.70>#/td### |
Identification
Analysis Item | Specification | Result |
UV Absorption Maxima | 278±nm, 361±nm, 550±2nm | Complies |
A361nm/A278nm | 1.70–1.90 | 1.86 |
A361nm/A550nm | 3.15–3.40 | 3.25 |
Cobalt (Identification B) | Meets USP | Complies |
HPLC Retention Time (Identification C) | The retention time of the major peak of the sample solution corresponds to that of the standard solution | Complies |
Impurities
Relative substances | Specification | Result |
7B,8B-Lactocyanocobalamin | <1.0>#/p### | 0.2>#/p### |
3,4-Methylcyanocobalamin | <2.0>#/p### | 0.4>#/p### |
8-Epi-Cyanocobalamin | <1.0>#/p### | 0.1>#/p### |
Any other unidentified & 5 0 - carboxycyanocobalamin | <0.5>#/p### | 0.1>#/p### |
Chemical Tests
Analysis Item | Specification | Result |
Acetone | <5000 ppm | 36 ppm |
Arsenic (As) | <1.0 ppm | Complies |
Lead (Pb) | <0.5 ppm | Complies |
Cadmium (Cd) | <0.2 ppm | Complies |
Mercury (Hg) | <0.1 ppm | Complies |
Microbiological Tests
Analysis Item | Specification | Result |
Total microbacterial | <1000 CFU/g | <10 CFU/g |
Yeast & Mould | <100 CFU/g | <10 CFU/g |
Escherichia coli | Absence (CFU/10g) | Complies |