Isobutyric acid [ 79-31-2 ]
 
                - Boiling Point
- -47 ( ℃ )
| mp | -47 °C | 
| bp | 153-154 °C(lit.) | 
| density | 0.95 g/mL at 25 °C(lit.) | 
| vapor density | 3.04 (vs air) | 
| vapor pressure | 1.5 mm Hg ( 20 °C) | 
| refractive index | n | 
| FEMA | 2222 | 
| Fp | 132 °F | 
| Water Solubility | 210 g/L (20 ºC) | 
| Merck | 14,5155 | 
| BRN | 635770 | 
| CAS DataBase Reference | 79-31-2(CAS DataBase Reference) | 
| NIST Chemistry Reference | Propanoic acid, 2-methyl-(79-31-2) | 
| EPA Substance Registry System | Propanoic acid, 2-methyl-(79-31-2) |