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LC242 L-Asparagine monohydratefor biochemistry |
| Order number | Packaging | Quantity | Price € |
| AC27242 | Plastic bottle | 100 g | 27.45 |
| AC27242 | Plastic bottle | 1 kg | 210.60 |
| AC27242 | Plastic drum | 10 kg | inquire |
| Product information | |
| Grade | Ph Eur |
| Synonyms | Asparaginic acid semiamide |
| Hill Formula | C4H8N2O3 * H2O |
| HS Code | 2924 19 00 |
| EC number | 200-735-9 |
| Molar mass | 150.14 g/mol |
| CAS number | 5794-13-8 |
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Chemical and physical data |
|
| Solubility | 22 g/l (20 °C) |
| Melting point | 215 – 217 °C decomposes |
| Molar mass | 150.14 g/mol |
| Bulk density | 530 kg/m3 |
| pH value | 4.0 – 5.5 (20 g/l, H2O, 20 °C) |
| Safety information | |
| Storage class | 10 – 13 Other liquids and solids |
| WGK | WGK 1 slightly water endangering |
| Disposal | 3 Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C. |
| Specifications | |
| Assay (Perchloric acid titration, calc. on anhydrous substance) | ≥ 99.0 % |
| Identity (IR-spectrum) | passes test |
| Appearance | White, crystalline powder or colorless crystals. |
| Appearance of solution (0.5 mol/l, hydrochloric acid 1 mol/l) | Clear and colorless. |
| Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 3 mol/l, calc. on anhydrous substance) | +34.1° to +35.6° |
| UV-Absorption – 260 nm, 0.5 mol/l, 1 cm, hydrochloric acid 1 mol/l |
≤ 0.05 |
| – 280 nm, 0.5 mol/l, 1 cm, hydrochloric acid 1 mol/l | ≤ 0.05 |
| Chloride (Cl) | ≤ 0.02 % |
| Sulfate (SO4) | ≤ 0.01 % |
| Heavy metals (as Pb) | ≤ 0.001 % |
| As (Arsenic) | ≤ 0.0005 % |
| Ca (Calcium) | ≤ 0.001 % |
| Co (Cobalt) | ≤ 0.0005 % |
| Fe (Iron) | ≤ 0.0005 % |
| K (Potassium) | ≤ 0.0005 % |
| Mg (Magnesium) | ≤ 0.0005 % |
| Na (Sodium) | ≤ 0.005 % |
| NH4 (Ammonium) | ≤ 0.01 % |
| Zn (Zinc) | ≤ 0.0005 % |
| Aspartic acid | ≤ 0.5 % |
| other foreign amino acids | ≤ 0.3 % |
| Other ninhydrine positive substances | ≤ 0.1 % |
| Water (according to Karl Fischer) | 11.5 – 12.5 % |
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