2-Butenedioic acid, 2-methyl-, (E)-
- Formula: C5H6O4
- Molecular weight: 130.0987
- IUPAC Standard InChI: InChI=1S/C5H6O4/c1-3(5(8)9)2-4(6)7/h2H,1H3,(H,6,7)(H,8,9)/b3-2+
- IUPAC Standard InChIKey: HNEGQIOMVPPMNR-NSCUHMNNSA-N
- CAS Registry Number: 498-24-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
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- Other names: Mesaconic acid; trans-1-Propene-1,2-dicarboxylic acid; trans-2-Methyl-2-butenedioic acid; Methylfumaric acid; 2-Methylfumaric acid; (E)-2-Methyl-2-butenedioic acid; Butenedioic acid, methyl-, (E)-; Fumaric acid, methyl-; Mesaconate; Kyselina mesakonova; 2-Butenedioic acid, 2-methyl-, (2E)-; NSC 65438
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Condensed phase thermochemistry data
Go To: Top, Mass spectrum (electron ionization), References, Notes
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 | -197.04 ± 0.35 | kcal/mol | Ccb | Wilhoit and Lei, 1965 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -478.16 ± 0.34 | kcal/mol | Ccb | Wilhoit and Lei, 1965 | Reanalyzed by Cox and Pilcher, 1970, Original value = -478.46 kcal/mol; Corresponding ΔfHºsolid = -197.04 kcal/mol (simple calculation by NIST; no Washburn corrections) |
Mass spectrum (electron ionization)
Go To: Top, Condensed phase thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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| Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | NIST Mass Spectrometry Data Center, 1994 |
| NIST MS number | 134190 |
References
Go To: Top, Condensed phase thermochemistry data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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, Mass spectrum (electron ionization), 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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