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| L-Cystine |
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| Chemical Name： |
L(-)-3,3'-Dithiobis(2-aminopropanoic
acid)
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Structure Formula：
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Molecular Formula：
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C6H12N2O4S2
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Molecular Weight：
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Cas No：
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[56-89-3]
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Characteristics：
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a
colorless or white crystalline substance of hexagon, or
crystalline powder, easily soluble in acid and alkali, insoluble
in water and organic solvents such as alcohol, ethyl 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
crystal or crystalline powder; tasteless
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Assay, %
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98.5~101.0
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Specific rotation
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-218°~ -224°
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Loss on drying, %
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≤0.2
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Transmittance, %
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≥98.0
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Chloride (as Cl), %
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≤0.02
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Sulfate (as SO4),
%
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≤0.02
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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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5.0~6.5
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Residue on ignition, %
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≤0.1
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Other amino acid
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Conforms
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The
Characteristics and Uses：
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L-Cystine is one of the
important products the amino acid series. It is widely used in medical,
chemical and food industries.
Cystine promotes oxide and reductive ability of human cell,
increases white blood cell, cures the infections diseases such as
asthma, never ache, eczema. It is a good drug for prevention of skin
old and feeble, cirrhosis and other liver diseases.
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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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