L-Cystine 1-Kg
L-Cystine suitable for biopharmaceutical production FCC. CAS 56-89-3, molar mass 240.30 g/mol.
Manufacturer: Merck
Catalog ID: 102836.1000
Stock: In Stock
Description
| Catalogue Number | 102836 |
| Synonyms | Cys |
Product Information
| CAS number | 56-89-3 |
| EC number | 200-296-3 |
| Grade | FCC |
| Hill Formula | C₆H₁₂N₂O₄S₂ |
| Molar Mass | 240.30 g/mol |
| HS Code | 2930 90 13 |
Applications
| Application | L-Cystine suitable for biopharmaceutical production FCC. CAS 56-89-3, molar mass 240.30 g/mol. |
Physicochemical Information
| Density | 1.677 g/cm3 (20 °C) |
| Melting Point | 261 - 262 °C (decomposition) |
| Bulk density | 300 kg/m3 |
| Solubility | 0.19 g/l insoluble |
Storage and Shipping Information
| Storage | Store at +5°C to +30°C. |
Specifications
| Assay (ex N, calc. on dried substance) | 98.5 - 101.5 % |
| Identity (IR-spectrum) | passes test |
| Appearance | white to almost white, fine-crystalline powder |
| Appearance of solution (100 g/l, hydrochloric acid 2 mol/l) | clear and colorless |
| Spec. rotation (α 20/D, 20 g/l, hydrochloric acid 1 mol/l, previously dried substance) | -215 to -225 |
| Heavy metals (as Pb) | ≤ 10 ppm |
| Pb (Lead) | ≤ 5 ppm |
| Ninhydrin - positive substances (LC) (largest single impurity) | ≤ 0.2 % |
| Ninhydrin - positive substances (LC) (Sum of all impurities) | ≤ 0.5 % |
| Sulfated ash (800 °C) | ≤ 0.1 % |
| Loss on drying (105 °C; 3 h) | ≤ 0.2 % |
| Corresponds to FCC V |
