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High Quality Vitamin B12:
1)It is an especially common vitamer of the vitamin B12 family. It is the most famous vitamer of the family, because it is chemically the most air-stable, and it is the easiest to crystallize and therefore easiest to purify after it is produced by bacterial fermentation.
2)Vitamin B12 is necessary for the synthesis of red blood cells, the maintenance of the nervous system, and growth and development in children.
3)Deficiency can cause anemia. Vitamin B12 neuropathy, involving the degeneration of nerve fibres and irreversible neurological damage, can also occur.
4)Particle Size: 100% pass 80mesh
Quality standard: USP31/EP5.0/BP2004/CP2005
Shelf life: 5 years
Test Items | Specifications | Test Result | Items Conclusion |
Description | Dark red crystalline powder, Have no smelly and tasteless; Hygroscopicity. | Dark red crystalline powder, Have no smelly and tasteless; Hygroscopicity. | Complies |
Identification | Positive | Positive | Complies |
Ratio Absorbances | A361nm/A278nm:1.70-1.90 A361nm/A550nm:3.15-3.40 | 1.83 3.22 | Complies |
Pseudo Cyanocobalamin | Complies | Complies | Complies |
Loss on Drying | ≤12.0% | 3.4% | Complies |
Assay on dried | 96.0%-100.5% | 98.3% | Complies |
Bacteria | ≤1000cfu/g | 700cfu/g | Complies |
Mould,yeasts | ≤100cfu/g | No found | Complies |
E Coli | No found | No found | Complies |
Limit of residual solvents | Acetone≤0.5% | 0.28% | Complies |
Conclusion | Conform to Complies with USP32. | ||
Vitamin b12