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potassium butyrate

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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
solid,1 bar211.52J/mol*KN/AFranzosini, Ngeyi, et al., 1987 

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
157.97298.15Franzosini, Ngeyi, et al., 1987T = 10 to 350 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

Temperature of phase transition

Ttrs (K) Initial Phase Final Phase Reference Comment
461.4crystaline, Vcrystaline, IVFranzosini, Ngeyi, et al., 1987 
467.2crystaline, IVcrystaline, IIIFranzosini, Ngeyi, et al., 1987 
541.crystaline, IIIcrystaline, IIFranzosini, Ngeyi, et al., 1987 
562.2crystaline, IIcrystaline, IFranzosini, Ngeyi, et al., 1987 
461.4crystaline, Vcrystaline, IVFerloni and Franzosini, 1975 
540.8crystaline, IIIcrystaline, IIFerloni and Franzosini, 1975 

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
0.409123.85crystaline, VIIcrystaline, VIFranzosini, Ngeyi, et al., 1987 
0.269142.3crystaline, VIcrystaline, VBFranzosini, Ngeyi, et al., 1987Bifurcated transitions.
1.172467.2crystaline, IVcrystaline, IIIFerloni and Franzosini, 1975Combined values.
4.435562.2crystaline, IIcrystaline, IFerloni and Franzosini, 1975Combined values.
10.837626.1crystaline, IliquidFerloni and Franzosini, 1975 
0.670133.crystaline, VIIcrystaline, VFerloni, Sanesi, et al., 1975Taken as sum of data for transitions at 123 K and 143 K at average temperature.

Entropy of phase transition

DeltaStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
3.33123.85crystaline, VIIcrystaline, VIFranzosini, Ngeyi, et al., 1987 
1.88142.3crystaline, VIcrystaline, VBFranzosini, Ngeyi, et al., 1987Bifurcated
2.51467.2crystaline, IVcrystaline, IIIFerloni and Franzosini, 1975Combined
8.03562.2crystaline, IIcrystaline, IFerloni and Franzosini, 1975Combined
17.32626.1crystaline, IliquidFerloni and Franzosini, 1975 
5.0133.crystaline, VIIcrystaline, VFerloni, Sanesi, et al., 1975Taken

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.

Franzosini, Ngeyi, et al., 1987
Franzosini, P.; Ngeyi, S.P.; Westrum, E.F., Jr., Thermophysics of metal alkanoates. VII. Heat capacities and thermodynamic properties of potassium n-butanoate, J. Chem Thermodynam., 1987, 19, 113-123. [all data]

Ferloni and Franzosini, 1975
Ferloni, P.; Franzosini, P., Calorimetric study of sodium and potassium n-butyrates, Gazz. Chim. Ital., 1975, 105, 391-401. [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]


Notes

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