Descripción
Product Name: L-Cystine
CAS Number: 56-89-3; EC Number: 200-296-3
Chemical Formula: C6H12N2O4S2
Molecular Weight: 240.2918
Synonyms: 2S,7S)-(-)-Cystine;
3,3'-Dithiobis(2-aminopropionic acid);
Specification:
Appearance: | White crystalline powder |
Assay[dry basis]: | 98.5% to 101.0% |
Specific rotation [α]D20: | -215º~-225º |
State of solution: | Clear and colorless |
Transmittance: | 98.0% min. |
Loss on drying | 0.20% max. |
PH: | 5.0~6.5 |
Residue on ignition [sulfated]: | 0.10% max. |
Chloride [Cl-]: | 16.6% to 17.0% |
Ammonium [NH4+]: | 0.020% max. |
Sulfate [SO4]: | 0.020% max. |
Iron [Fe]: | 10ppm max. |
Heavy metals [Pb]: | 10ppm max. |
Arsenic [As2O3]: | 1ppm max. |
Other amino acids: | Chromatographically not detectable |