| Product Name: | Vitamin B12 |
| Alias: : | cobalamin, cyanocobalamin, animal protein factor, anti-pernicious anemia vitamin |
| Appearance: | red crystalline powder |
| Shelf Life: | 2 Years |
| Chemical formula: | C63H88CoN14O14P |
| Molecular weight: | 1355.37CAS |
| Melting point: | 210 to 220 ºC (blackened) |
Vitamin B12
, also called cobalamin, is a polycyclic compound containing trivalent cobalt. 4 reduced pyrrole rings are joined together to become a corrin ring (similar to porphyrin), which is the only metal containing Elements of vitamins. Vitamin B12 is a red crystalline powder, odorless and tasteless, slightly soluble in water and ethanol, most stable under pH 4.5-5.0 weak acid conditions, decomposed in strong acid (pH<2) or alkaline solution, and may be damaged to a certain extent when exposed to heat . Higher animals and plants cannot produce vitamin B12. Vitamin B12 in nature is synthesized by microorganisms. Vitamin B12 is the only vitamin that needs the help of intestinal secretions (endogenous factors) to be absorbed. It participates in the production of bone marrow red blood cells, prevents pernicious anemia, and prevents brain nerves from being damaged.
| ANALYSIS | SPECIFICATION | RESULTS |
| Appearance | Red powder | Complies |
| Odor | Characteristic | Complies |
| Tasted | Characteristic | Complies |
| Assay | 99% | Complies |
| Sieve Analysis | 100% pass 80 mesh | Complies |
| Loss on Drying | 5% Max | 1.02% |
| Sulphated Ash | 5% Max | 1.3% |
| Extract Solvent | Ethanol & Water | Complies |
| Heavy Metal | 5ppm Max | Complies |
| As | 2ppm Max | Complies |
| Residual Solvents | 0.05% Max. | Negative |
| Microbiology | ||
| Total Plate Count | 1000/g Max | Complies |
| Yeast & Mold | 100/g Max | Complies |
| E.Coli | Negative | Complies |
| Salmonella | Negative | Complies |