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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Gas phase thermochemistry data
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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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -259.1 ± 1.1 | kJ/mol | Ccb | Harrop, Head, et al., 1970 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°gas | -3156. | kJ/mol | Ccb | Guinchant, 1918 | Corresponding ΔfHºgas = -241. kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of gas
| Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 142.97 ± 0.43 | 369.0 | Nickerson J.K., 1961 | GT |
| 150.62 ± 0.45 | 394.0 | ||
| 156.40 ± 0.47 | 414.0 | ||
| 162.00 ± 0.49 | 434.0 | ||
| 167.15 ± 0.50 | 454.0 |
References
Go To: Top, Gas 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]
Guinchant, 1918
Guinchant, M.J.,
Etude sur la fonction acide dans les derives metheniques et methiniques,
Ann. Chem., 1918, 10, 30-84. [all data]
Nickerson J.K., 1961
Nickerson J.K.,
The thermodynamic properties of the methyl ketone series,
J. Phys. Chem., 1961, 65, 1037-1043. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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