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    DL-Methionine
    Product name: DL-Methionine
    Molecular formula:

    C5H11NO2S

    CAS NO.: 59-51-8
    Index: 99.0
    Other:

    Molecular formula:C5H11NO2S   Molecular weight:149.21

    Uses: Used as a biochemical reagent; suitable for the prevention and treatment of liver diseases and arsenic or benzene poisoning; it can also be used to treat malnutrition caused by insufficient protein after dysentery and chronic infectious diseases; this product is a feed nutrition fortifier.

    Properties: white flake crystal or crystalline powder. Has a special smell. Slightly sweet. Melting point is 281 degrees (decomposed). The pH value of 10% aqueous solution is 5.6-6.1. It has no optical activity. It is stable to heat and air. It is unstable to strong acids and can cause demethylation. It is soluble in water (3.3g / 100ml, 25 degrees), dilute acid and dilute Solution. Very difficult to dissolve in ethanol, almost insoluble in ether

    CAS NO.:59-51-8

    Appearance

    White to beige powder

    Purity

    ≥99% (NT) (TLC)

    Loss on drying

    <0.2 %

    Heavy metals (as Pb)

    <10 ppm

    Res. after ignition

    <0.1 %

    pH

    5.6 ~ 6.1 (1% soln.25°C)

    Transmittance

    >95 % (c=10, 2 N HCl, 430 nm) 1 cm cell

    Cl

    < 200 ppm

    SO4

    < 200 ppm

    NH4

    < 200 ppm

    Fe

    < 10 ppm

    Other amino acids

    <0.2 % (TLC)

     

     

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