Propanedioic acid
- Formula: C3H4O4
- Molecular weight: 104.0615
- IUPAC Standard InChI: InChI=1S/C3H4O4/c4-2(5)1-3(6)7/h1H2,(H,4,5)(H,6,7)
- IUPAC Standard InChIKey: OFOBLEOULBTSOW-UHFFFAOYSA-N
- CAS Registry Number: 141-82-2
- 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. - Isotopologues:
- Other names: Malonic acid; Carboxyacetic acid; Dicarboxymethane; Methanedicarboxylic acid; CH2(COOH)2; USAF EK-695; Kyselina malonova; Methanedicarbonic acid; NSC 8124
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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°solid | -891.1 ± 0.4 | kJ/mol | Ccb | Wilhoit and Shiao, 1964 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -861.15 ± 0.63 | kJ/mol | Ccb | Wilhoit and Shiao, 1964 | Corresponding ΔfHºsolid = -891.02 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°solid | -861.57 ± 0.63 | kJ/mol | Ccb | Verkade, Hartman, et al., 1926 | Reanalyzed by Cox and Pilcher, 1970, Original value = -864.0 kJ/mol; See Verkade, Hartman, et al., 1924; Corresponding ΔfHºsolid = -890.61 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 149.00 | J/mol*K | N/A | Fukai, Matsuo, et al., 1991 | crystaline, II phase; DH |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 127.63 | 298.15 | Fukai, Matsuo, et al., 1991 | crystaline, II phase; T = 10 to 370 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.
Wilhoit and Shiao, 1964
Wilhoit, R.C.; Shiao, D.,
Thermochemistry of biologically important compounds. Heats of combustion of solid organic acids.,
J. Chem. Eng. Data, 1964, 9, 595-599. [all data]
Verkade, Hartman, et al., 1926
Verkade, P.E.; Hartman, H.; Coops, J.,
Calorimetric researches. X. Heats of combustion of successive terms of homologous series: dicarboxylic acids of the oxalic acid series,
Rec. Trav. Chim. Pays/Bas, 1926, 45, 373-393. [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]
Verkade, Hartman, et al., 1924
Verkade, P.E.; Hartman, H.; Coops, J., Jr.,
Chemistry - The molecular heat of combustion of successive terms of homologous series,
Kom. Med. Akad. Ueknschap. Proc., 1924, 27, 859-866. [all data]
Fukai, Matsuo, et al., 1991
Fukai, M.; Matsuo, T.; Suga, H.,
Thermodynamic properties of phase transitions in malonic acid and its deuterated analog,
Thermochim. Acta, 1991, 183, 215-243. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) 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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