L-Aspartic Acid


    AppearanceWhite to almost white crystalline powder or colourless crystals
    Appearance of solutionClear < BY6
    Dilute Mineral AcidsSoluble
    Dilute Solutions of alkali hydroxidesSoluble


    (as dried)
    98.5 to 101.5%
    IdentificationA) Specific Optical Rotation: +24
    (Test for activated charcoal)
    Value no. 5 of the colour scale
    (In Alcohol, Ether)
    Practically insoluble
    Solubility in WaterSlightly soluble
    Ninhydrin-positive substancesComplies
    Chloride (Cl)Max 200 ppm
    Sulphate (SO4)Max 300 ppm
    Ammonium (NH4)Max 200 ppm
    CadmiumMax 1 ppm
    Sulphated ashMax 0.10 %
    Loss on dryingMax 0.50 %
    LeadMax 3 ppm
    MercuryMax 0.1 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 Tue 28 September 2010 (158)

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