|
Description: |
DL-Cysteine |
|
CAS NO.: |
3374-22-9 |
|
Add time: |
2008-1-8 9:32:15 |
|
DL-Cysteine | |
|
Item |
Specification |
|
Appearance |
White crystals or crystalline powder |
|
Specific Rotation[α]D20 |
-1° to +1° |
|
State of solution |
Clear and colorless |
|
Not less than 95.0% | |
|
Chloride (Cl) |
Not more than 0.10% |
|
Iron (Fe) |
Not more than 5ppm |
|
Heavy Metals (Pb) |
Not more than 10ppm |
|
Aresenic (As2O3) |
Not more than 1ppm |
|
Other amino aicds |
Chromatographically not detectable |
|
Loss on drying |
Not more than 0.2% |
|
Residue on ignition |
Not more than 0.1% |
|
Assay |
98.0% to 102.0% |
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