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| L-Cysteine |
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| Chemical Name： |
(+)-2-Amino-3-mercaptopropionic
acid
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Structure Formula：
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Molecular Formula：
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C3H7NO2S
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Molecular Weight：
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Cas No：
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[52-90-4]
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Characteristics：
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White crystalline powder; tasteless, easily
soluble in water but insoluble in alcohol and ether
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Quality
Standards：
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AJI97
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Item
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Specifications (AJI97
)
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Appearance
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White crystalline
powder
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Assay, %
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98.0~101.0
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Specific rotation
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+8.3°~+9.5°
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Loss on drying, %
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≤0.5
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Transmittance, %
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≥95.0
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Chloride (as Cl), %
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≤0.04
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Sulfate (as SO4),
%
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≤0.03
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Ammonium as (as NH4),
%
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≤0.02
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Iron (as Fe), %
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≤0.001
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Heavy Metals (as Pb), %
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≤0.001
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Arsenic (as As), %
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≤0.0001
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pH Value
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4.5~5.5
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Residue on ignition, %
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≤0.1
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Other amino acid
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No detd
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The
Characteristics and Uses：
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L-Cysteine is one of the
important products the amino acid series. It is widely used in medical,
chemical and food industries.
It is a promotor for bread fermentation. It promotes the form of
glutelin and prevents from getting old and feeble. It is used in
natural fruit juice for preventing Vitamin C oxide. It has a
detoxification for poison of acrylonitrile. It is used for
protecting against radiation harm and therapy of bronchitis and
reducing phlegm.
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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 nonpoisonous polyethylene bag or alumin, and the outer layer being a
paper board barrel. Each barrel contains
a net weight of 25kg. Packages may be arranged in accordance with
customer’s requirements.
Handle with care. Protect the product from sunshine or rain.
Do not transport them together with poisonous or harmful goods.
This product belongs to the non-dangerous category and can be transported
as a general chemical product.
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Storage：
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Stored in dry, clean and ventilated places. 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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