| Molecular Formula | C4H6O |
| Molar Mass | 70.09 |
| Density | 0.83 g/mL at 25 °C(lit.) |
| Melting Point | 228 °C (decomp) |
| Boling Point | 61-62 °C(lit.) |
| Flash Point | −1 °F |
| Storage Condition | 2-8°C |
| Refractive Index | n20/D 1.396(lit.) |
| MDL | MFCD00008578 |
| Risk Codes | R11 - Highly Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
| UN IDs | UN 3271 3/PG 2 |
| WGK Germany | 3 |
| Hazard Class | 3.1 |
| Packing Group | I |
| BRN | 878166 |