CAS No.: | 50-14-6 |
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Formula: | C28h44o |
EINECS: | 200-014-9 |
Packaging Material: | Metal |
Storage Method: | Frozen |
Shelf Life: | >12 Months |
Customization: |
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Vitamin D2, chemically known as Ergocalciferol, is a ring-opening steroid formed by the breaking of chemical bonds of steroids in response to photochemical action, in particular by ultraviolet light and ergosterols. Ergocalciferol can also be used as a dietary supplement to supplement vitamin D, as can ergocalciferol and cholecalciferol (vitamin D3), which is produced by skin exposure to ULTRAVIOLET light.
Product Name: | Vitamin D2 | |
Cas number: | 50-14-6 | |
Molecular formula | C28H44O | |
Standard | USP34 | |
ANALYSIS ITEMS | SPECIFICATION | |
Description | Should be a white needle-shape crystal or white crystal powder; give out no smell, no taste; be easy to lose activity in air or light | |
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Examination | Dissolve 10mg of vitmain D2 into 2ml of 90% ethanol, add 2ml solution of digitalis saponin and incubate for 18hours. No precipitation or cloud should be observed. | |
Melting range | 115ºC~119ºC | |
Specific rotation | +103°~+106° | |
SolUBILITY | Freely soluble in alcohol | |
Reducing Substances | <20ppm | |
Assay | 97.0%~103.0% | |
Store condition | Store in airtight container, protected from light, At a temperature between 2~8ºC |
ANALYSIS
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SPECIFICATION
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RESULTS
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Appearance
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White Powder
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Complies
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Odor
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Characteristic
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Complies
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Tasted
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Characteristic
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Complies
|
Assay
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99%
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Complies
|
Sieve Analysis
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100% pass 80 mesh
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Complies
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Loss on Drying
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5% Max.
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1.02%
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Sulphated Ash
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5% Max.
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1.3%
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Extract Solvent
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Ethanol & Water
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Complies
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Heavy Metal
|
5ppm Max
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Complies
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As
|
2ppm Max
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Complies
|
Residual Solvents
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0.05% Max.
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Negative
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Microbiology
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|
|
Total Plate Count
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1000/g Max
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Complies
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Yeast & Mold
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100/g Max
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Complies
|
E.Coli
|
Negative
|
Complies
|
Salmonella
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Negative
|
Complies
|
Recommended transportation selections | ||
By Express | By Air Transportation | By Sea Transportation |
Suitable for sample order or <50kg | Suitable for >50kg | Suitable for >300kg |
Fast: 3-10 days | Fast: 3-7 days | Slow: 7-45 days |
High shipping cost | Lower than express cost | Lowest cost |
Door to door service | Airport to airport service | Port to port service |
Professional broker needed | Professional broker needed |
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