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L-Cysteine
| Chemical Name£º |
L-2-Amino-5-guanidinopentanoic acid hydrochloride~H-Arg-OH.HCl |
| Structure Formula£º |
 |
| Molecular Formula£º |
C3H7NO2S |
| Molecular Weight£º |
121.15 |
| Cas No£º |
[52-90-4] |
| Characteristics£º |
White crystalline powder; tasteless, easily soluble in water but insoluble in alcohol and ether |
| Quality Standards£º |
AJI97 |
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| Ammonium as (as NH4), % |
≤0.02 |
| Iron (as Fe), % |
≤0.001 |
| Heavy Metals (as Pb), % |
≤0.001 |
| Arsenic (as As), % |
≤0.0001 |
| PH Value |
4.5~5.5 |
| Residue on ignition, % |
≤0.1 |
| Other amino acid |
≤0.4 |
| 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. |
| Sulfate (as SO4), % |
≤0.03 |
| |
|
| The Characteristics and Uses£º |
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. |
| Package and Transport£º |
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£º |
| Chloride (as Cl), % |
¡Ü0.04 |
| Item |
Specifications (AJI97 ) |
| Appearance |
White crystalline powder |
| Assay, % |
98.0~101.0<> |
| Specific rotation |
+8.3¡ã~+9.5¡ã |
| Loss on drying, % |
¡Ü0.5 |
| Transmittance, % |
¡Ý95.0 |
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