2-Pentanone is found in apple. 2-Pentanone is isolated from soya oil (Glycine max), pineapple and a few other plant sources Pentan-2-one or methyl propyl ketone is a colorless liquid ketone with an odor resembling that of acetone. Its formula is C5H10O. It is sometimes used in very small amounts as a flavoring food additive. Two other ketones, 3-pentanone and methyl isopropyl ketone are isomers of 2-pentanone. 2-Pentanone belongs to the family of Ketones. 2-Pentanone is a clear colorless liquid with the odor of fingernail polish. Flash point 45°F. Less dense than water and soluble in water. Hence floats on water. Density 0.809 g / cm3. Vapors heavier than air.
- Formula
- C5H10O
- Molar mass
- 86.134 g/mol
- CAS Number
- 107-87-9
- Density
- 0.809 g/cm3 at 25°C (77°F)
- Appearence
- Liquid
- Melting point/freezing point
- Melting point/range: - 78°C (-108°F) - lit.
- Initial boiling point and boiling range
- 101 - 105°C (214 - 221°F) - lit.
- Flash point
- 7°C (45°F) - closed cup
- Vapour pressure
- 36hPa (27mmHg) at 20°C (68°F)
- Vapour density
- 2.97 - (Air = 1.0)
- Water solubility
- 72.6 g/l at 20°C (68°F) - OECD Test Guideline 105