Butanedioic acid, methyl-
- Formula: C5H8O4
- Molecular weight: 132.1146
- IUPAC Standard InChI: InChI=1S/C5H8O4/c1-3(5(8)9)2-4(6)7/h3H,2H2,1H3,(H,6,7)(H,8,9)
- IUPAC Standard InChIKey: WXUAQHNMJWJLTG-UHFFFAOYSA-N
- CAS Registry Number: 498-21-5
- 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: Succinic acid, methyl-; Methylsuccinic acid; Pyrotartaric acid; 1,2-Propanedicarboxylic acid; Methylbutanedioic acid; 2-Methylsuccinic acid; 2-Methylbutanedioic 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 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 |
|---|---|---|---|---|---|
| ΔcH°solid | -2152.7 ± 1.0 | kJ/mol | Ccb | Verkade and Hartman, 1933 | Reanalyzed by Cox and Pilcher, 1970, Original value = -2156. kJ/mol; At 288 K; Corresponding ΔfHºsolid = -958.22 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 199.6 | 323. | Satoh and Sogabe, 1939 | T = 0 to 100°C. Mean value.; 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.
Verkade and Hartman, 1933
Verkade, P.E.; Hartman, H.,
Calorimetric researches XXI. Heats of combustion of methyl-, ethyl- and phenyl-substituted succinic acids and of their anhydrides: a. Experimental data,
Rec. Trav. Chim. Pays/Bas, 1933, 52, 945-968. [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]
Satoh and Sogabe, 1939
Satoh, S.; Sogabe, T.,
The specific heats of some solid aliphatic acids and their ammonium salts and the atomic heat of nitrogen,
Sci. Pap. Inst. Phys. Chem. Res. (Tokyo), 1939, 36, 97-105. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid ΔcH°solid Enthalpy of combustion of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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