Evaluation of the Thermophysical Properties of Toluene and n‐Heptane from 180 to 320 K and up to 260 MPa from Speed‐of‐Sound Data

Abstract

Abstract A number of important thermophysical properties of liquid toluene and n‐heptane have been evaluated in the temperature range form 180 to 320 K and at pressures up to 260 MPa using the previously reported speed‐of‐sound data and following a modified computational method originally developed by Davis and Gordon. The derived properties include the density, the isobaric thermal expansivity, the isothermal compressibility, the specific heat, the entropy and the enthalpy. The derived density data for the two liquids have been used to examine the validity of several empirical equations of state for liquids.