3-Pentanone
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| Names | |
|---|---|
| IUPAC name
Pentan-3-one
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| Other names
diethyl ketone, diethylketone, 3-pentanone
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.002.265 |
CompTox Dashboard (EPA)
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| Properties | |
| C5H10O | |
| Molar mass | 86.13 g/mol |
| Density | 0.815 g/cm³ |
| Melting point | -39 °C |
| Boiling point | 100-102 °C |
| Solubility in other solvents | water: 50 g/l (20 °C) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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3-Pentanone (also known as diethyl ketone) is simple, symmetrical dialkyl ketone. It is a colorless liquid ketone with an odor like that of acetone. It is soluble in about 25 parts water, but miscible with organic solvents. It is mainly used as a solvent in paint and a precursor to vitamin E.[1] Two related and more important ketones are 3-pentanone are 2-pentanone and methyl isopropyl ketone.
3-Pentanone is produced industrially from propionic acid using metal oxide catalysts:
- 2 CH3CH2CO2H → (CH3CH2)2CO + CO2 + H2O
It can also be prepared from ethylene, CO, and H2.[1]
Safety
The TLV value for 3-pentanone is 200 ppm (705 mg/m3).[1]
References
- ^ a b c Hardo Siegel, Manfred Eggersdorfer "Ketones" in Ullmann's Encyclopedia of Industrial Chemistry Wiley-VCH, 2002 by Wiley-VCH, Wienheim. doi:10.1002/14356007.a15_077
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