vitamin C

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Description
Appearance White crystalline powder
Identification Positive reaction
Melting point About 190 ºC
Specific rotation +20.5 — +21.5 º
PH value 2.1 – 2.6
Clarity of solution Clear
Colour of solution BY7 max
Heavy metals 10 ppm max
Copper 5 ppm max
Iron 2 ppm max
Assay(on dried basis) 99.0 – 100.5%
Residue on ignition 0.1% max
Organic volatile impurities Conforms
Oxalic Acid 0.2% max
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