D-malic acid
- Formula: C4H6O5
- Molecular weight: 134.0874
- IUPAC Standard InChI: InChI=1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)/t2-/m0/s1
- IUPAC Standard InChIKey: BJEPYKJPYRNKOW-REOHCLBHSA-N
- CAS Registry Number: 636-61-3
- 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. - Stereoisomers:
- Other names: (r)-Hydroxybutanedioic 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 | -1105.7 ± 0.63 | kJ/mol | Ccb | Wilhoit and Shiao, 1964 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -1325.9 ± 0.59 | kJ/mol | Ccb | Wilhoit and Shiao, 1964 | Corresponding ΔfHºsolid = -1105.7 kJ/mol (simple calculation by NIST; no Washburn corrections) |
Phase change 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: William E. Acree, Jr., James S. Chickos
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference |
|---|---|---|
| 23.01 | 376. | Leclercq, Collet, et al., 1976 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change 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]
Leclercq, Collet, et al., 1976
Leclercq, M.; Collet, A.; Jacques, J.,
Etude des melanges d'antipodes optiques---XII,
Tetrahedron, 1976, 32, 7, 821-828, https://doi.org/10.1016/0040-4020(76)80007-5
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change 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 ΔfusH Enthalpy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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