【CAS No.】：638-23-3
【Structural Formula】： C5H9NO4S
【Structural Formula】： C5H9NO4S
【Molecular weight】： 179.19
【Description】:White crystalline powder.
insoluble in cold water and organic solvent such as grain alcohol and acet.
but soluble in basic and acidic aqueous solution.
【Packing】:25KG/ Paper drum
CERTIFICATE OF ANALYSIS
|
Product:S-Carboxymethyl-L-Cysteine CAS NO.:638-23-3 | ||
|
Item |
Specification(AJI92) |
Result |
|
Specific rotation[a]D20 |
-33.5° TO -36.5° |
-33.9° |
|
State of solution ( Transmittance) |
Clear and colorless
≥ 98.0% |
99.3% |
|
Chloride(Cl) |
≤ 0.04% |
0.038% |
|
Sulfate (SO4) |
≤ 0.020% |
≤ 0.02% |
|
Iron(Fe) |
≤ 10ppm |
≤ 3ppm |
|
Heavy metals(Pb) |
≤ 10ppm |
≤ 5ppm |
|
Arsenic(as As2o3) |
≤ 1ppm |
≤ 1ppm |
|
other amino acids |
Chromatographically
Not detectable |
Conforms |
|
Loss on drying |
≤ 0.5% |
0.2% |
|
Residue on ignition(sulfated) |
≤ 0.1% |
0.05% |
|
Assay |
98.5% to 101.0% |
99.7% |
|
PH |
2.0 to 3.5 |
2.8 |
Conclusion: The products conform to the AJI92 standard.