L-Proline

    DESCRIPTION

    White crystals or crystalline powder, slightly sweet taste


    SPECIFICATIONS

    Assay98.5 to 101.0%
    IdentificationCompare the infrared absorption spectrum of the sample with that of the standard by potassium bromide aisc method
    SolubilityVery soluble in water, freely soluble in glacial acetic acid, sparingly soluble in ethanol, practically insoluble in ether
    (H2O,g/100g):155(20°), 188 (40°), 228(60°)
    Chloride (Cl)Max 0.02 %
    Sulphate (SO4)Max 0.02 %
    Ammonium (NH4)Max 0.02 %
    pH5.9 to 6.9
    Heavy metalsMax 10 ppm
    CadmiumMax 1 ppm
    Arsenic
    (As2O3)
    Max 2 ppm
    Loss on dryingMax 0.30 %
    LeadMax 5 ppm
    Specific Rotation [°]D20-84.5 to -86.0°
    State of SolutionMin 98.0 %
    Residue on ignitionMax 0.10 %
    Other Amino AcidsChromatographically not detectable
    MercuryMax 1 ppm
    Iron (Fe)Max 10 ppm


    Direct Food Ingredients will ensure that any material supplied this specification will confirm to the above physical and chemical properties. However, we have no control over the use of the material and can accept no responsibility for problems caused by the customer's failure to ensure the material supplied is suitable for the intended use.

    This specification has been last modified on Wed 2 March 2011 (470)

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