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    Selenium Methionine
    Product name: Selenium Methionine
    Molecular formula:

    C5H11NO2S  

    CAS NO.: 2578-28-1
    Index: 98
    Other:

    Molecular formula :C5H11NO2S        Molecular weight :149.21

    Application :It is used in biochemical research and nutritional supplements, as well as in the adjuvant treatment of pneumonia, cirrhosis and fatty liver.

    Property :This product is white crystal or crystalline powder. Melting point 276-279 ° C (dec.), specific optical rotation 23.25 ° (c = 2, 6N HCl). Water soluble: soluble.

    CAS NO.:63-68-3

    Item

    AJI92

    USP26

    Assay

    99.0~101.0%

    98.5~101.5%

    pH

    5.0~6.5

    5.0~6.5

    Specific rotation

    [a]D020

    -11.3~-12.1º

               

    [a]D025

    -9.8~-11.2º

    Transmittance(T430)

    ≥98.0%

     

    Chloride(Cl)

    ≤0.02%

    ≤0.04%

    Ammonium(NH4)

    ≤0.02%

     

    Sulfate(SO4)

    ≤0.02%

    ≤0.04%

    Iron(Fe)

    ≤10ppm

    ≤30ppm

    Heavy metals(Pb)

    ≤10ppm

    ≤15ppm

    Arsenic

    ≤1ppm(As2O3)

    ≤1.5ppm(As2O3)

    Other amino acids

    Conforms

     

    Loss on drying

    ≤0.20%

    ≤0.30%

    Residue on ignition

    ≤0.10%

    ≤0.40%

    Organic volatile impurities

     

    Conforms

    Supply reference

    Production Process

     

    Packing specification

     

    Quote batch

     

    Quote reference          yuan/ton

     

    Quote validity period

     

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