?Product No.?:SGP-B-06
?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.: 081001 Date:Oct . 4, 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.
