| Customization: | Available |
|---|---|
| CAS No.: | 68-19-9 |
| Formula: | C63h88con14o14p |
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NINGBO HI-TECH ZONE YEFENG NEW MATERIALS TECHNOLOGY CO.,LTD.
was established in 2012 and located in Ningbo city Zhejiang province, We focus on cosmetic rawmateirls, pharmaceutical raw mateirls and food additive chemicals export more than 20 years. We also can provide some products formula in these field. And also can service for client do some special chemical test in china mian lab, Like ingredint Analysis, UV test. We trust you will satisfy our quality and enjoly our service. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.
Vitamin B12 Dark red, crystalline powder or dark red crystals
25kg/cartons
| Appearance | Dark red, crystalline powder or dark red crystals |
| Solubility | Sparingly soluble in water; soluble in alcohol;and insoluble in acetone-, in chloroform-,and in ether. |
| Identification(Co) | Positive reaction. |
| Identification(UV) | Have maximum absorption at 278±1nm,361±1nm,and 550±lnm:A361nm/A278nm:1.70~1.90 A361nm/A550nm:3.15~3.40 |
| Identification(HPLC) | The retention time of the major peak of the Sample solution corresponds to that of the Standard solution |
| Identification(CN-) | Positive reaction. |
| Loss on drying | NMT 12.0% |
| Assay(dried substance) | 96.0%-100.5% |
| Related substances(Total impuritie) | ≤3.0% |
| Related substances(7β,8β-Lactocyanocobalamin) | ≤1.0% |
| Related substances(50-Carboxycyanocobalamin) | ≤0.5% |
| Related substances(34-Methylcyanocobalamin) | ≤1.0% |
| Related substances(32-Carboxycyanocobalamin) | ≤2.0% |
| Related substances(8-epi-Cyanocobalamin) | ≤1.0% |
| Related substances(Any other unidentified impurity) | ≤0.5% |
| Heavy Metals | ≤10.0 mg/kg |
| Residual Solvents Acetone- | ≤5000 mg/kg |
| Hg | ≤0.1mg/kg |
| Lead | ≤0.2 mg/kg |
| As | ≤0.5mg/kg |
| Cd | ≤0.2mg/kg |
| Total Plate Counts | ≤1000 cfu/g |
| Moulds and Yeasts | ≤100 cfu/g |
| Escherichia coli | Negative in 1g |
| Salmonella | Negative in 10g |
| Staphylococcus Aureus | Negative in 1g |
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