|
|
 |
L-Cystine |
| |
Chemical Name: L(-)-3,3'-Dithiobis(2-aminopropanoic acid)
Molecular Formula: C6H12N2O4S2 
Molecular Weight: 240.29
Cas NO: [ 56-89-3 ]
Characteristics: White crystals or crystalline powder; tasteless. Practically insoluble in water, in ethanol and in ether. Dissolves in dilute HCl.
Quality Standards: AJI92, FCC4 etc. |
Specification Sheet
(AJI92) |
|
Expiry Period : 2 years
Packaging: 25kg / drum |
|
Items |
Specifications |
Description |
White crystals or crystalline powder |
Identification |
Infrared absorption spectrum |
Assay, % |
98.5 ~ 101.0 |
Specific rotation,° |
-215 ~ -225 |
State of solution, % |
≥98.0 |
Chloride (Cl) , % |
≤0.020 |
Ammonium (NH4) , % |
≤0.02 |
Sulfate (SO4) , % |
≤0.020 |
Iron (Fe), ppm |
≤20 |
Heavy metals (Pb) , ppm |
≤10 |
Arsenic (As2O3) , ppm |
≤1 |
Other amino acids |
Conforms |
Loss on drying, % |
≤0.20 |
Residue on ignition (sulfated) , % |
≤0.10 |
PH |
5.0 ~ 6.5 |
|
|
|
|
