4-Nitropyridine N-oxide
Pharmaceutical Materials 2025-03-02
CAS Number: 1124-33-0
Molecular Formula: C5H4N2O3
Molecular Weight: 140.097 g/mol
Appearance: White to yellowish crystals
Melting Point: 159-162°C
Boiling Point: 397.2°C at 760 mmHg
Use: It is used as a synthetic intermediate.
| Property | Details |
|---|---|
| Chemical Name | 4-Nitropyridine N-oxide |
| CAS Number | 1124-33-0 |
| Molecular Formula | C5H4N2O3 |
| Molecular Weight | 140.097 g/mol |
| Synonyms | 4-Nitropyridine 1-oxide; 4-Nitropyridine oxide; 4-Nitro-N-oxopyridine; 4-Nitraminopyridine N-oxide; 4-Nitropyridine N-oxide (pyridine, 4-nitro-, 1-oxide); 4-Nitro pyridine N-oxide; 4-Nitro-pyridine N-oxide; 4-Nitropyridin N-oxide; Pyridine, 4-nitro-, 1-oxide (9CI); 4-Nitropyridine N-oxide, 98% |
| Appearance | White to pale yellow crystals |
| Density | 1.43 g/cm³ |
| Melting Point | 159-162 °C (lit.) |
| Boiling Point | 397.2 °C at 760 mmHg |
| Flash Point | 194 °C |
| Solubility | Insoluble in water |
| Stability | Stable if used and stored according to specifications. No known dangerous reactions. Avoid oxides. |
| Storage Conditions | Keep the container tightly closed and store in a cool, dry place. Ensure good ventilation or exhaustion in the workplace. |
| Hazard Statements | H301. H315. H319. H335 (Toxic if swallowed, causes skin irritation, causes serious eye irritation, may cause respiratory irritation) |
| Precautionary Statements | P261. P301+P310. P305+P351+P338 (Avoid breathing dust/fumes/gas/mist/vapours/spray. If swallowed, immediately call a POISON CENTER or doctor/physician. Rinse thoroughly after contact with skin. Remove contaminated clothing and wash before reuse.) |
| Usage | Used as a synthetic intermediate in various chemical reactions. |
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