Chemical Properties
| Melting point | 121-122 °C |
| Boiling point | 58.85°C |
| Density | 0.9152 |
| refractive index | 1.3963 (estimate) |
| solubility | Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol |
| form | Oil |
| color | Colourless to Orange |
| Stability | Light Sensitive, Moisture Sensitive, Volatile |
| EPA Substance Registry System | 2-Propynal (624-67-9) |