Customization: | Available |
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CAS No.: | 50-81-7 |
Formula: | C6h8o6 |
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Packaging & delivery
Quantity(tons) | 1 - 20 | >20 |
Lead time (days) | 30 | To be negotiated |
Item
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Standard
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Appearance
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White or almost white, crystalline powder or colourless crystals
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Melting point
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About 190ºC. with decomposition
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Infrared absorption spectrum
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Infrared absorption spectrum accord with the referance spectrum of ascorbic acid CRS
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PH(With 5% water solution)
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2.1-2.6
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PH(With 2% water solution)
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2.4-2.8
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Appearance of solution
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Clarity; clear; colour: ≤BY7
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Specific optical rotation
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20.5ºC- 21.5ºC
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Loss on drying
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≤0.4%
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Impurity E
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≤0.2%
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Related substance
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Impurity C: ≤0.15%
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Impurity D: ≤0.15%
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Unpecified impurities:≤0.10%
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Total impurities:≤0.20%
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Copper
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≤5.0ppm
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Iron
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≤2.0ppm
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Arisenic
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≤3.0ppm
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Lead
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≤2.0ppm
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Heavy metals
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≤10ppm
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Sulphated ash
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≤0.1%
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Assay
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99.0% ~ 100.5%
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