L-CYSTINE 98.5% FOR BIOCHEMISTRY
(R,R)-3,3′-Dithiobis(2-aminopropionicacid)
| Product Code | B-00925 | BRAND | Bio-Chem |
|---|---|---|---|
| Grade | For Biochemistry | CAS No | 56-89-3 |
| Molecular Formula | C6H12N2O4S2 | Molecular Weight | 240.30 |
| H.S.Code | 2930.90400 | Shelf Life | 60 Months |
| Purity | 98.5 % |
Physical Properties
| Physical state at 20 °C | Solid | Colour | Colorless crystalline |
|---|---|---|---|
| Solubility in water [% weight] | Soluble in water | Melting point/ Freezing point [°C] | > 240°C |
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
Symbol: GHS05, GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338