| Melting point | -81 °C |
| Boiling point | 69 °C |
| density | 0.85 g/mL at 25 °C(lit.) |
| vapor density | 2.4 (vs air) |
| vapor pressure | 121 mm Hg ( 20 °C) |
| refractive index | n |
| Fp | 5 °F |
| storage temp. | 2-8°C |
| form | Liquid |
| color | Pale yellow |
| Odor Threshold | 0.0085ppm |
| Water Solubility | 6 g/100 mL (20 ºC) |
| Sensitive | Light Sensitive |
| BRN | 1209258 |
| Exposure limits | ACGIH: TWA 1 mg/m3 OSHA: TWA 2 mg/m3 NIOSH: IDLH 50 mg/m3; Ceiling 2 mg/m3 |
| Stability: | Stable. Incompatible with strong bases, strong oxidising agents, strong reducing agents. Light and air-sensitive. Hazardous polymerisation may occur. |
| InChIKey | STNJBCKSHOAVAJ-UHFFFAOYSA-N |
| CAS DataBase Reference | 78-85-3(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Propenal, 2-methyl-(78-85-3) |
| EPA Substance Registry System | Methacrolein (78-85-3) |
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