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S-Carboxymethyl-L-Cysteine
Related Product Searches:S-Carboxymethyl-L-Cysteine,High Quality,amino acid, S-Carboxymethyl
S-Carboxymethyl-L-Cysteine
[CAS No.]:638-23-3
[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) Lot NO.:100401 Date: April . 6, 2008 | ||
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.
S-Carboxymethyl-L-Cysteine