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Hebei Huaheng Biological Technology Co., Ltd.
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M.F:C6H12N2O4S2
M.W:240.29
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
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.
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.
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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Changzhou Comwin Fine Chemicals Co., Ltd.
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L-Cystine Chemical Name | L-Cystine | CAS No. | 56-89-3 | Molecular Formula | C6H12N2O4S2 | Molecular Weight | 240.3 | Molecular Structure |  | | Storage | Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from metals. Keep refrigerated. Store protected from moisture. Store protected from light and air. |
SPECIFICATION ITEMS | SPECIFICATION | Appearance | White crystals or crystalline powder | Identification | Conforms with the reference spectrum | | Specific rotation | -215~-225° | | Chloride | ≤ 0.02% | | Sulfate | ≤ 0.02% | | Iron | ≤ 10ppm | | Heavy metals | ≤ 10ppm | | Organic Impurities | individual impurity ＜0.2% total impurities ＜ 2.0% | | Loss on drying | ≤ 0.20% | | Residue on ignition | ≤ 0.10% | | Assay | 98.5~101.5% |
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Pharma Sources Insight January 2025
