[2H2]malonic [2H2]acid
- Formula: C3D4O4
- Molecular weight: 108.0861
- IUPAC Standard InChI: InChI=1S/C3H4O4/c4-2(5)1-3(6)7/h1H2,(H,4,5)(H,6,7)/i1D2/hD2
- IUPAC Standard InChIKey: OFOBLEOULBTSOW-BGOGGDMHSA-N
- CAS Registry Number: 813-56-9
- Chemical structure:
This structure is also available as a 2d Mol file - Isotopologues:
- Other names: Malonic acid-d4
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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: Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°solid,1 bar | 157.14 | J/mol*K | N/A | Fukai, Matsuo, et al., 1991 | crystaline, II phase |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 139.93 | 298.15 | Fukai, Matsuo, et al., 1991 | crystaline, II phase; T = 10 to 370 K. |
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: Eugene S. Domalski and Elizabeth D. Hearing
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.02386 | 60.0 | crystaline, III | crystaline, II | Fukai, Matsuo, et al., 1991 | |
| 1.810 | 348.0 | crystaline, II | crystaline, I | Fukai, Matsuo, et al., 1991 |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.411 | 60.0 | crystaline, III | crystaline, II | Fukai, Matsuo, et al., 1991 | |
| 5.201 | 348.0 | crystaline, II | crystaline, I | Fukai, Matsuo, et al., 1991 |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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
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- 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) ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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