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| L-Methionine |
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| Chemical Name： |
Amino
methylthiohufanoic acid
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Structure Formula：
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Molecular Formula：
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C5H11NO2S
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Molecular Weight：
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Cas No：
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[63-68-3]
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Characteristics：
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White, lustrous, or a white ,crystalline powder. It has a slight,
characteristic odor. It is soluble in water, in alkali solutions,
and in dilute mineral acids. It is slightly soluble in alcohol and
practically insoluble in ether.
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Quality Standards：
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AJI97
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Item
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Specification
(AJI97)
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Appearance
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White
crystals or crystalline powder
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Assay, % (on dry matter)
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98.5~101.5
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Specific
rotation
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+21.9°~+24.1°
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pH
value
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5.6~6.1
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Loss
on drying, %
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≤0.3
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Heavy
metals, %
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≤0.0015
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Residue
on ignition, %
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≤0.4
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Chloride,%
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≤0.05
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Sulfate,%
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≤0.03
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Arsenic,
%
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≤0.00015
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Iron, %
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≤0.003
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The
Characteristics and Uses：
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One composition
of amino acid infusion. It is an essential amino acid for human
body. And it is also used as food additive.
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Package
and Transport：
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This product
is contained in a double-layer package, the inner layer being a
sealed non-poisonous polyethylene bag or aluminium foil, and the
outer layer being a 25kg drum. Packages may be arranged in
accordance with customer’s requirements.
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Storage：
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Stored
in dry, clean and ventilated places. Protect it from moisture, heat
or sunshine. In order to avoid pollution, it is prohibited to place
this product together with poisonous or harmful substances. The
expiry date is for two years.
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