Methanamine, hydrochloride

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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 bar138.53J/mol*KN/AAston and Ziemer, 1946Using metastable c,II below 220 K gives S = 138.70 J/mol*K.

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
90.92298.15Aston and Ziemer, 1946T = 12 to 298 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 as indicated in comments:
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
114.5533.AStephenson and Malanowski, 1987Based on data from 518. to 593. K.; AC

Enthalpy of phase transition

ΔHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
1.778220.4crystaline, IIIcrystaline, IIAston and Ziemer, 1946DH
2.820264.5crystaline, IIcrystaline, IAston and Ziemer, 1946DH

Entropy of phase transition

ΔStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
8.07220.4crystaline, IIIcrystaline, IIAston and Ziemer, 1946DH
10.66264.5crystaline, IIcrystaline, IAston and Ziemer, 1946DH

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.

Aston and Ziemer, 1946
Aston, J.G.; Ziemer, C.W., Thermodynamic properties of the three crystalline forms of methylammonium chloride, J. Am. Chem. Soc., 1946, 68, 1405-1413. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]


Notes

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