|Molar mass||98.145 g·mol−1|
|Density||0.875 g/cm3 (at 20 °C)|
|Flash point||34 °C (93 °F) (closed cup)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
3-Methyl-3-penten-2-one is an unsaturated aliphatic ketone. It is an isomer of mesityl oxide and isomesityl oxide. It is a precursor of 3-methyl-2-pentanone (methyl sec-butyl ketone) and is obtained by acid-catalyzed dehydration of 4-hydroxy-3-methyl-2-pentanone. It is used as an intermediate in organic chemistry syntheses.
- Hardo Siegel, Manfred Eggersdorfer (2007), "Ketones", Ullmann's Encyclopedia of Industrial Chemistry (7th ed.), Wiley, p. 5
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