L-Cystine 98.5% For Biochemistry
(R,R)-3,3'-Dithiobis(2-aminopropionicacid)
Product Code. |
00925 |
Grade |
|
Purity |
98.5% |
CAS No. |
56-89-3 |
Molecular Formula |
C6H12N2O4S2 |
Molecular Weight |
240.30 |
H.S.Code |
2930.90400 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Colorless crystalline |
Melting point/ Freezing point [°C] |
> 240 °C |
| Solubility in water [% weight] |
Soluble in water |
Packaging
Specification
| Appearance | White to off white powder |
| Assay | 98.5 - 101% |
| Specific optical rotation ([?]20/D; 20 g/L in 1 mol/L HCl; on dried substance) | -218 to -224° |
| Chloride (Cl) | Max 0.05% |
| Sulphate (SO4) | Max 0.03% |
| Ammonium (NH4) | Max 0.02% |
| Ninhydrin positive substance | Max 0.2% |
| Loss on dryig (at 110°C) | Max 0.5% |
| Sulphated ash | Max 0.1% |
| Iron (Fe) | Max 0.002% |
| Lead (Pb) | Max 0.001% |
Safety Information and Hazard Symbols