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Volumetric properties are key inputs in calculations of thermodynamic properties of real fluids as they give information about the variation of the thermodynamic properties with pressure or density at constant temperature. In this chapter, a rational way of calculating thermodynamic quantities, including partial molar quantities based on volumetric properties, is presented. Finally, empirical rules are discussed which enable one to use state-of-the-art equations of state for each component of a given mixture. Some of these rules have rarely been reported in the literature.

The vapor pressure of di-tert-butylsilane [GAS Registry No. 30736-07-3] to be used in metalorganic vapor phase epitaxy (MOVPE) was measured by a static method in the technologically important temperature range from (241 to 288) K. The experimental data were fitted by the Antoine equation. To the best of our knowledge, this is the first time that the vapor pressure measurements of di-tert-butylsilane are reported.

Recommended vapor pressure data for ferrocene (CAS Registry Number: 102-54-5) in the temperature range from 242 K to 447 K were developed by the simultaneous correlation of critically assessed vapor pressures, heat capacities of the crystalline phase and the ideal gas, and calorimetrically determined enthalpies of sublimation. All of the properties needed for the correlation were newly determined in this work. The value for the enthalpy of sublimation, Δ cr g H m (298.15 K) = (74.38 ± 0.38) kJ · mol−1, is recommended. Comparisons with literature values are shown for all measured and derived properties.

International audience; A thermodynamic study of selected monoterpenoids, geraniol, β-citronellol, and borneol, is presented in this work. The vapor pressure measurements were performed using two static apparatus over a wide temperature range from 273 to 363 K. Liquid heat capacities were measured by Tian–Calvet calorimetry in the temperature interval from 258 to 355 K. The phase behavior was investigated by DSC from 183 K. The thermodynamic properties in the ideal-gas state were calculated by combining statistical thermodynamics and density functional theory (DFT) calculations. Calculated ideal-gas heat capacities and experimental data on vapor pressure and condensed phase heat capacity were treated simultaneously to obtain a consistent thermodynamic description.

Isobaric heat capacities of selected cycloalcohols (cyclobutanol, CAS RN: 2919-23-5; cyclopentanol, CAS RN: 96-41-3; cyclohexanol, CAS RN: 108-93-0; cycloheptanol, CAS RN: 502-41-0; cyclooctanol CAS RN: 696-71-9) were measured with a highly sensitive Tian–Calvet calorimeter in the temperature range from 254 K to 352 K. Experimental heat capacity data were correlated as a function of temperature. The phase behavior was investigated with a differential scanning calorimeter. Calorimetric measurements were complemented by FTIR spectroscopy for less volatile compounds (cyclohexanol, cycloheptanol, cyclooctanol). The main aim of this work was to fill the gap in reliable heat capacity data for these compounds and to extend the knowledge base required for a better understanding of alcohols self-association.