| Molecular Formula | C5H5NO2 |
| Molar Mass | 111.1 |
| Density | 1.189 |
| Melting Point | 65-69 ºC |
| Boling Point | 183 ºC |
| Flash Point | 64 ºC |
| Vapor Presure | 0.793mmHg at 25°C |
| pKa | -0.34±0.10(Predicted) |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
| Refractive Index | 1.516 |
| Hazard Symbols | Xn - Harmful![]() |
| Risk Codes | R22 - Harmful if swallowed R36 - Irritating to the eyes |
| Safety Description | 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 2 |
| Hazard Class | IRRITANT |