2-Pentanone
- Formula: C5H10O
- Molecular weight: 86.1323
- IUPAC Standard InChI: InChI=1S/C5H10O/c1-3-4-5(2)6/h3-4H2,1-2H3
- IUPAC Standard InChIKey: XNLICIUVMPYHGG-UHFFFAOYSA-N
- CAS Registry Number: 107-87-9
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Ethyl acetone; Methyl n-propyl ketone; Methyl propyl ketone; Propyl methyl ketone; n-C3H7COCH3; Pentan-2-one; Metylopropyloketon; UN 1249; n-Propyl methyl ketone; Pentanone-2; NSC 5350
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Condensed phase thermochemistry data
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -297.3 ± 1.1 | kJ/mol | Ccb | Harrop, Head, et al., 1970 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°liquid | -3099.4 ± 0.8 | kJ/mol | Ccb | Harrop, Head, et al., 1970 | Corresponding ΔfHºliquid = -297.29 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid | 274.1 | J/mol*K | N/A | Andon, Counsell, et al., 1968 | DH |
| S°liquid | 272.42 | J/mol*K | N/A | Oetting, 1965 | DH |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 185.4 | 298.15 | Saluja, Peacock, et al., 1979 | DH |
| 185.1 | 298.15 | Grolier, Benson, et al., 1975 | DH |
| 184.3 | 298.15 | Harrop, Head, et al., 1970 | DH |
| 184.2 | 298.15 | Andon, Counsell, et al., 1968 | T = 10 to 360 K.; DH |
| 184.35 | 298.15 | Oetting, 1965 | T = 12 to 330 K.; DH |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Harrop, Head, et al., 1970
Harrop, D.; Head, A.J.; Lewis, G.B.,
Thermodynamic properties of organic oxygen compounds. 22. Enthalpies of combustion of some aliphatic ketones,
J. Chem. Thermodyn., 1970, 2, 203-210. [all data]
Andon, Counsell, et al., 1968
Andon, R.J.L.; Counsell, J.F.; Martin, J.F.,
Thermodynamic properties of organic oxygen compounds. Part XX. The low-temperature heat capacity and entropy of C4 and C5 ketones,
J. Chem. Soc. A, 1968, 1894-1897. [all data]
Oetting, 1965
Oetting, F.L.,
Absolute entropies of the methyl alkyl ketones at 298.15 K,
J. Chem. Eng. Data, 1965, 10, 122-125. [all data]
Saluja, Peacock, et al., 1979
Saluja, P.P.S.; Peacock, L.A.; Fuchs, R.,
Enthalpies of interaction of aliphatic ketones with polar and nonpolar solvents,
J. Am. Chem. Soc., 1979, 101, 1958-1962. [all data]
Grolier, Benson, et al., 1975
Grolier, J-P.E.; Benson, G.C.; Picker, P.,
Simultaneous measurements of heat capacities and densities of organic liquid mixtures-systems containing ketones,
J. Chem. Eng. Data, 1975, 20, 243-246. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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