Low-temperature calorimetric and vapor-pressure studies on alkanediamines

Low-temperature calorimetric measurements were obtained on the condensed phases three alkanediamines, ethylenediamine, (dl)-1,2-propanediamine, and 2-methyl-1,2-propanediamine, as a basis for deriving their heat capacities, C s, entropies, S s, thermodynamic functions, − “G s (T) − H o (0)’ T , “H s...

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Bibliographic Details
Published in:The Journal of chemical thermodynamics 1975-01, Vol.7 (11), p.1029-1046
Main Authors: Messerly, J.F., Finke, H.L., Osborn, A.G., Douslin, D.R.
Format: Article
Language:English
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Summary:Low-temperature calorimetric measurements were obtained on the condensed phases three alkanediamines, ethylenediamine, (dl)-1,2-propanediamine, and 2-methyl-1,2-propanediamine, as a basis for deriving their heat capacities, C s, entropies, S s, thermodynamic functions, − “G s (T) − H o (0)’ T , “H s (T) − H o (0)’ T , and H s( T) − H o(0), and the enthalpies, entropies, and temperatures of phase transitions. Vapor-pressure measurements were carried out on the above alkanediamines and (dl)-1,2-butanediamine as a means for transforming the condensed-state thermodynamic properties to the perfectgas state at 1 atm. Standard values at 298.15 K were calculated for the enthalpy, Gibbs energy, and equilibrium constant of formation.
ISSN:0021-9614
1096-3626
DOI:10.1016/0021-9614(75)90237-2