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Vitamin B12 Best quality Vitamin B12 68-19-9
Vitamin B12 Food Grade | ||||
PARAMETER | SPECIFICATION | |||
Appearance | Light red homogencous powder | |||
Identification | Positive | |||
Loss on drying | Max.0.5% | |||
Assay of vitamin B12(on dry sub) | 0.9-1.3% (HPLC Method) | |||
Carrier | Mannitol | |||
Size | Max 250um |
Vitamin B12 Feed Grade | ||||
PARAMETER | SPECIFICATION | |||
Appearance | Light red homogencous powder | |||
Identification | Positive | |||
Loss on drying | Max.12% | |||
Assay of vitamin B12(on dry sub) | 0.9-1.3% (HPLC Method) | |||
Carrier | Starch | |||
Size | Max 250um |
Vitamin B12 (Cyanocobalamin) | ||||
PARAMETER | SPECIFICATION (USP32) | |||
Appearance | dark-red,crystalline powder, Or crystals,hygroscopic | |||
Identification | Positive | |||
Loss on drying | Max.12% | |||
Ratio Absorbances |
A361nm/A278nm:1.70-1.90 A361nm/A550nm:3.15-3.40 |
|||
Pseudo Cyanocobalamin | Complies | |||
Assay on dried | 96.0%-100.5% | |||
Microbiology | ||||
Bacteria | ≤1000cfu/g | |||
Mould & yeasts | ≤100cfu/g | |||
E Coli | Negative | |||
Limit of residual | Acetone≤0.5% |
Vitamin B12 (Mecobalamin) | ||||
PARAMETER | SPECIFICATION (Standard of JP X IV) | |||
Appearance | Dark red crystals crystalline powder | |||
Identification | UV: Compare the spectrum with the reference spectrum | |||
Chemical: Postive | ||||
Solution purity | Clear and red color | |||
Assay (on anhydrous basis) | Min. 98.0% | |||
Related substances (HPLC) | The largest area of the peaks: ≤0.5% | |||
Tatal content: ≤2.0 | ||||
Moisture | Max.12.0% | |||
Acetone,By GC | ≤5000ppm |
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