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Acetic acid, potassium salt

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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, Kenneth Kroenlein director
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tfus582.KN/ANgeyi, Malik, et al., 1990Crystal phase 1 phase; Uncertainty assigned by TRC = 2. K; TRC
Tfus578.7KN/AFerloni, Sanesi, et al., 1975Crystal phase 1 phase; Uncertainty assigned by TRC = 0.2 K; TRC

Temperature of phase transition

Ttrs (K) Initial Phase Final Phase Reference Comment
332.crystaline, IIIcrystaline, IIHouse and Kemper, 1990DH

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.2454429.5crystaline, IIcrystaline, IHouse and Kemper, 1990DH
0.34671411.crystaline, IIIbcrystaline, IIIaNgeyi, Malik, et al., 1990DH
0.18957425.crystaline, IIIacrystaline, IINgeyi, Malik, et al., 1990DH
1.613474.crystaline, IIcrystaline, INgeyi, Malik, et al., 1990DH
7.649582.crystaline, IliquidNgeyi, Malik, et al., 1990Crystal to isotropic liquid.; DH
0.420423.crystaline, IIcrystaline, IFerloni, Sanesi, et al., 1975, 2DH
15.230578.7crystaline, IliquidFerloni, Sanesi, et al., 1975, 2DH

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
0.577429.5crystaline, IIcrystaline, IHouse and Kemper, 1990DH
0.8065411.crystaline, IIIbcrystaline, IIIaNgeyi, Malik, et al., 1990DH
0.4157425.crystaline, IIIacrystaline, IINgeyi, Malik, et al., 1990DH
3.3840474.crystaline, IIcrystaline, INgeyi, Malik, et al., 1990DH
13.137582.crystaline, IliquidNgeyi, Malik, et al., 1990Crystal; DH
1.0423.crystaline, IIcrystaline, IFerloni, Sanesi, et al., 1975, 2DH
26.3578.7crystaline, IliquidFerloni, Sanesi, et al., 1975, 2DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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.

Ngeyi, Malik, et al., 1990
Ngeyi, S.P.; Malik, I.; Westrum, E.F., Thermodyanamics of alkali alkanoates VII. Heat capacity and thermodynamic functions of potassium acetate from 4 to 585 K, J. Chem. Thermodynam., 1990, 22, 91-98. [all data]

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]

House and Kemper, 1990
House, J.H.; Kemper, K.A., Phase transitions and their thermal hysteresis in anhydrous potassium acetate, Thermochim. Acta, 1990, 162(2), 325-331. [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

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