Acetic acid, sodium salt
- Formula: C2H3NaO2
- Molecular weight: 82.0338
- 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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Condensed phase thermochemistry data
Go To: Top, Phase change data, 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: Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°solid,1 bar | 138.10 | J/mol*K | N/A | Franzosini, Plautz, et al., 1983 | |
S°solid,1 bar | 123.09 | J/mol*K | N/A | Strelkev, 1955 |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
100.83 | 298.15 | Franzosini, Plautz, et al., 1983 | T = 7 to 350 K. |
111.7 | 340. | Ferloni, Sanesi, et al., 1975 | crystaline, IV phase; T = 340 to 610 K. |
88.07 | 291.18 | Strelkev, 1955 | T = 13 to 292 K. Value is unsmoothed experimental datum. |
Phase change data
Go To: Top, Condensed phase thermochemistry data, 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 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, 2 | 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 (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.290 | 414. | crystaline, IV | crystaline, III | Ferloni, Sanesi, et al., 1975 | DH |
0.420 | 465. | crystaline, III | crystaline, II | Ferloni, Sanesi, et al., 1975 | DH |
0.170 | 527. | crystaline, II | crystaline, I | Ferloni, Sanesi, et al., 1975 | DH |
17.950 | 601.3 | crystaline, I | liquid | Ferloni, Sanesi, et al., 1975 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.7 | 414. | crystaline, IV | crystaline, III | Ferloni, Sanesi, et al., 1975 | DH |
0.8 | 465. | crystaline, III | crystaline, II | Ferloni, Sanesi, et al., 1975 | DH |
0.3 | 527. | crystaline, II | crystaline, I | Ferloni, Sanesi, et al., 1975 | DH |
29.9 | 601.3 | crystaline, I | liquid | Ferloni, Sanesi, et al., 1975 | DH |
Mass spectrum (electron ionization)
Go To: Top, Condensed phase thermochemistry data, Phase change 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 | E. White V, SmithKline Corp. |
NIST MS number | 353306 |
References
Go To: Top, Condensed phase thermochemistry data, Phase change 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.
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]
Strelkev, 1955
Strelkev, I.I.,
Specific heat and entropy of sodium acetate,
Ukr. Khim. Zh. (Russ. Ed.), 1955, 21, 551-553. [all data]
Ferloni, Sanesi, et al., 1975
Ferloni, P.; Sanesi, M.; Franzosini, P.; C4 alkanoates, Phase transitions in the alkali C1-n.,
Z. Naturforsch. 30a, 1975, 1447-1454. [all data]
Ferloni, Sanesi, et al., 1975, 2
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]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Mass spectrum (electron ionization), References
- 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) 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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