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LC241 L-Asparagine monohydratesuitable for use as excipient exp Ph Eur |
| Order number | Packaging | Quantity | Price € |
| AC27241 | Plastic bottle | 100 g | inquire |
| AC27241 | Plastic bottle | 1 kg | inquire |
| AC27241 | Plastic drum | 5 kg | inquire |
| AC27241 | 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 |
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| 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, calculated on dried substance) | 99.0 – 101.0 % |
| Identity (IR-spectrum) | passes test |
| Appearance | white to almost white crystalline powder or colorless crystals |
| Appearance of solution (20 g/l, CO2-free water) | clear and colorless |
| Spec. rotation (α 20/D, 100 g/l, hydrochloric acid 3 mol/l, calc. on drie substance) | +33.7° to +36.0° |
| pH (20 g/l, CO2-free water) | 4.0 – 6.0 |
| Chloride (Cl) | ≤ 200 ppm |
| Sulfate (SO4) | ≤ 200 ppm |
| Heavy metals (as Pb) | ≤ 10 ppm |
| Fe (Iron) | ≤ 10 ppm |
| NH4 (Ammonium) | ≤ 0.1 % |
| Aspartic acid | ≤ 0.5 % |
| Ninhydrin – positive substances (TLC) – Glutamic acid |
≤ 0.5 % |
| – any other impurity | ≤ 0.5 % |
| Residual solvents (Ph.Eur./ICH) class 3 (Ethanol) | ≤ 0.5 % |
| Other residual solvents (Ph Eur/ICH) | excluded by manufacturing process |
| Sulfated ash (600 °C) | ≤ 0.1 % |
| Loss on drying (130 °C, 3 h) | 10.5 – 12.5 % |
| Bacterial endotoxins | ≤ 3.0 I.U./g |
| Residues of metal catalysts or metal reagents acc. to EMEA/CHMP/SWP/4446/2000 are not likely to be present. |
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| Corresponds to Ph. Eur. | |
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