Acetic acid, sodium salt
- Formula: C2H3NaO2
- Molecular weight: 82.0338
- IUPAC Standard InChI: InChI=1S/C2H4O2.Na/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
- IUPAC Standard InChIKey: VMHLLURERBWHNL-UHFFFAOYSA-M
- CAS Registry Number: 127-09-3
- 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. - Species with the same structure:
- Other names: Sodium acetate; Sodium ethanoate
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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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 601.3 | K | N/A | Ferloni, Sanesi, et al., 1975 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.2 K; TRC |
Temperature of phase transition
| Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|
| 21. | crystaline, II | crystaline, I | Franzosini, Plautz, et al., 1983 | S = 12.5 J/mol*K Questionable second-order transition.; DH |
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.0693 | 414. | crystaline, IV | crystaline, III | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 0.100 | 465. | crystaline, III | crystaline, II | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 0.0406 | 527. | crystaline, II | crystaline, I | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 4.2902 | 601.3 | crystaline, I | liquid | Ferloni, Sanesi, et al., 1975, 2 | DH |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.2 | 414. | crystaline, IV | crystaline, III | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 0.2 | 465. | crystaline, III | crystaline, II | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 0.07 | 527. | crystaline, II | crystaline, I | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 7.15 | 601.3 | crystaline, I | liquid | Ferloni, Sanesi, et al., 1975, 2 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ferloni, Sanesi, et al., 1975
Ferloni, P.; Sanesi, M.; Franzosini, P.,
Phase transitions in the alkali C1-n.C4 alkanoates,
Z. Naturforsch., A: Phys., Phys. Chem., Kosmophys., 1975, 30, 1447-57. [all data]
Franzosini, Plautz, et al., 1983
Franzosini, P.; Plautz, W.A.; Westrum, E.F., Jr.,
Thermophysics of metal alkanoates. I. Heat capacities and thermodynamic properties of sodium methanoate and ethanoate,
J. Chem. Thermodynam., 1983, 15, 445-456. [all data]
Ferloni, Sanesi, et al., 1975, 2
Ferloni, P.; Sanesi, M.; Franzosini, P.; C4 alkanoates, Phase transitions in the alkali C1-n.,
Z. Naturforsch. 30a, 1975, 1447-1454. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point Ttrs Temperature of phase transition ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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