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DL-Cysteine
| 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% |