OUR COMPANY IS SPECIALIZED IN DEALING WITH l-cysteine (Free Base)
| L-Cysteine (Free Base) | CAS NO:52-90-4 |
| Chemical Name |
(+)-2-Amino-3-mercaptopropionic Acid |
| Structure Formula |
|
| Molecular Formula |
C 3 H 7 NO 2 S |
| Molecular Weight |
121.15 |
| Cas No |
[52-90-4] |
| Characteristics |
White crystalline powder; tasteless, easily soluble in water but insoluble in alcohol and ether |
|
|
AJI92
|
USP24
|
FCC4
|
||
| Appearance | White crystals or crystalline powder | White crystals or crystalline powder | |||
| Assay | 98.0~101.0% | 98.0~102.5% | |||
| PH | 4.5~5.5 | ||||
| Specific rotation[a]D20° | +8.3°+9.5° | +7.0°+9.0° | |||
| State of solution | ≥95.0% | ||||
| Chloride(Cl) | ≤0.040% | ≤0.05% | |||
| Ammonium(NH 4 ) | ≤ 0.02% | ||||
| Sulfate(SO 4 ) | ≤0.020% | ≤0.029% | |||
| Iron(Fe) | ≤10PPm | ≤20PPm | |||
| Heavy metals(Pb) | ≤10PPm | ≤10PPm | |||
| Arsenic(As2O3) | ≤1PPm | ||||
| Other amino acids | Conforms | ||||
| Loss on drying | ≤0.5% | ≤0.5% | |||
| Residue on ignition | ≤0.1% | ≤0.2% |
PACKING; 25KGS/DRUM
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