L-Cysteine
Inquiry
| Post Date: | Jun 20,2016 |
| Expiry Date: | Jun 20,2017 |
| Detailed Description: |
Cas No. :52-90-4
Quantity: 5000Metric Tons Specs:98% Payment Method: T/T L/C Appearance: Our L-Cysteine is colorless or white crystalline substance of hexagon, or crystalline powder. Statutory No: CAS 52-90-4 Molecular formula: C6H12N2O4S2 Molecular weight: 240.3 Product specification: Item Specifications (AJI97 ) Appearance White crystal or crystalline powder; tasteless Assay, % 98.5~101.0 Specific rotation -218°~ -224° Loss on drying, % ≤0.2 Transmittance, % ≥98.0 Chloride (as Cl), % ≤0.02 Sulfate (as SO4), % ≤0.02 Ammonium as (as NH4), % ≤0.02 Iron (as Fe), % ≤0.001 Heavy Metals (as Pb), % ≤0.001 Arsenic (as As), % ≤0.0001 pH Value 5.0~6.5 Residue on ignition, % ≤0.1 Packaging: 25kg/paper plastic complex bag,or according to order. Storage: Preserve in well-closed,container,store in cool, dry place. Shelf life: in conform to the specified storage conditions and packaging is complete, shelf life is 2 years. Usage: (1) L-Cysteine is one of the important products the amino acid series. It is widely used in medical, chemical and food industry. (2) It is a good drug for prevention of skin old and feeble, cirrhosis and other liver diseases. |
| CAS Registry Number: | 52-90-4 |
| Synonyms: | ;Cysteine, L-;L-(+)-Cysteine;L-Alanine, 3-mercapto-;L-Cys;NSC 8746;L-Cysteine;(+)-2-Amino-3-mercaptopropionic acid;L-beta-mercaptoalanine;L-Cysteine Free Base Crystalline;(S)-(-)-Cysteine;L-Cysteine Base;H-Cys-OH; |
| Molecular Formula: | C3H7NO2S |
| Molecular Weight: | 121.15 |
| Molecular Structure: | 
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| Hazard Symbols: |  Xn:Harmful; |
| Risk Codes: | R22:; R36/37/38:; |
| Safety Description: | S26:; S37/39:; |
| Company: | Hebei Zhousheng Biological Technology CO., LTD |
| Contact: | elaine |
| Tel: | 0311-86556681 |
| Fax: | 0311-86556687 |
| Email: | elaine@zsbiological.com |
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