2-Oxopentanedioic acid
- Formula: C5H6O5
- Molecular weight: 146.0981
- IUPAC Standard InChI: InChI=1S/C5H6O5/c6-3(5(9)10)1-2-4(7)8/h1-2H2,(H,7,8)(H,9,10)
- IUPAC Standard InChIKey: KPGXRSRHYNQIFN-UHFFFAOYSA-N
- CAS Registry Number: 328-50-7
- 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: 2-Ketoglutaric acid; 2-Oxoglutaric acid; α-Ketoglutaric acid; Pentanedioic acid, 2-oxo-; Glutaric acid, 2-oxo-; Glutaric acid, α-keto-; 2-Oxo-1,5-pentanedioic acid; NSC 17391; α-Oxoglutaric acid
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Condensed 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | -1027.89 | kJ/mol | Ccb | Kobenina and Pobedinskaya, 1983 | |
| ΔfH°solid | -1026.2 ± 0.88 | kJ/mol | Ccb | Wilhoit and Lei, 1965 | Reanalyzed by Cox and Pilcher, 1970, Original value = -1026.5 ± 0.88 kJ/mol |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -1801.11 | kJ/mol | Ccb | Kobenina and Pobedinskaya, 1983 | Corresponding ΔfHºsolid = -1023.93 kJ/mol (simple calculation by NIST; no Washburn corrections) |
| ΔcH°solid | -1798.9 ± 0.84 | kJ/mol | Ccb | Wilhoit and Lei, 1965 | Reanalyzed by Cox and Pilcher, 1970, Original value = -1797.0 kJ/mol; Corresponding ΔfHºsolid = -1026.2 kJ/mol (simple calculation by NIST; no Washburn corrections) |
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.
Kobenina and Pobedinskaya, 1983
Kobenina, N.M.; Pobedinskaya, A.I.,
Standard heats of combustion and formation of cis-aconitic, α-oxoglutaric, and oxalacetic acids,
Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1983, 26, 1015-1016. [all data]
Wilhoit and Lei, 1965
Wilhoit, R.C.; Lei, I.,
Thermochemistry of biologically important compounds. Heats of combustion of five organic acids.,
J. Chem. Eng. Data, 1965, 10, 166-168. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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