Thermophysical properties of 1-hexanol over the temperature range from 303 K to 503 K and at pressures from the saturation line to 400 MPa

Testing the ability of various equations of state to reproduce high-pressure isotherm crossings in the (α, P) plane

“…This behavior has been documented in different papers, mainly by Randzio et al [1][2][3][4][5] and in papers referencing newly measured thermophysical properties of fluids [6,7]. The isobaric expansivity ˛, defined by:…”

“…(2) shows that a negative value of (∂˛/∂T) P may cause (∂c P /∂P) T to become zero. As a result, for many substances, isothermal curves in diagrams c P versus P exhibit a shallow minimum at high pressure.…”

Isobaric thermal expansivity behaviour against temperature and pressure of associating fluids

“…However, as it is said above, association is mainly revealed by second-order derivatives of the thermodynamic potential, especially by the isobaric molar heat capacity and isobaric thermal expansivity [2]. Up to date, there is not any systematic study of their behaviour against temperature and pressure; these properties have been only studied for a small set of associating compounds [8][9][10][11][12].…”

Scanning transitiometry for science and industry

“…For example, calorimetric measurements have demonstrated that with addition of n-hexanol to n-hexane the crossing of isotherms is pushed to higher pressures, almost as a linear function of n-hexanol concentration [20,21]. This behavior could be approached only with the soft-sphere EOS [18] with an addition of a contribution to the pressure coming from the association [22].…”