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        Ascorbic Acid

        CAS number: 50-81-7

        Molecular formula:

        molecular weight:

        Chemical structure:


        Product name:  Ascorbic Acid
        Expiry Date:  Three years
        Inspection Standard:  BP2013, E300, USP36, FCC8, EP 7.
        Tests Standards Results
        Appearance White crystalline powder White crystalline powder
        Identification Positive Positive
        Clarity of solution Clear Clear
        Color of solution ≤BY7 <by7< td="">
        Assay 99.0~100.5% 99.5%
        Loss on Drying ≤0.4% 0.05%
        Residue on ignition 0.1% 0.03%
        Sulphate Ash 0.1% 0.03%
        Specific rotation +20.5°~+21.5° +20.92°?
        pH(with 2% water solution) 2.4-2.8 2.59
        PH(with 5% water solution) 2.1-2.6 2.35
        Melting range About 190℃ 191℃
        Heavy metals ≤3ppm <3ppm< td="">
        Iron ≤2ppm <2ppm< td="">
        Copper ≤5ppm <5ppm< td="">
        Impurity E ≤0.2% <0.2%< td="">
        Arsenic ≤1ppm <1ppm< td="">
        Lead ≤2ppm <2ppm< td="">
        Cadmium ≤1ppm <1ppm< td="">
        Mercury ≤1ppm <1ppm< td="">
        Organic volatile impurities Meets the requirements conform
        Related Substances ImpurityC≤0.15% Complies
        Any Other Unspecific Impurities
        Total Impurity≤0.2%
        Total Plate Count ≤1,000cfu/g <1,000cfu/g
        Conclusion: According to BP2013, E300, USP36, FCC8, EP 7.