Speeds of sound, densities, isobaric thermal expansion, compressibilities, and internal pressures of heptan-1-ol, octan-1-ol, nonan-1-ol, and decan-1-ol at temperatures from (293 to 318) K and pressures up to 100 MPa

摘要

The speeds of sound in heptan-1-ol, octan-1-ol, and nonan-1-ol at pressures up to 101 MPa and in decan-1-ol at pressures up to 76 MPa have been measured within the temperature range of (293 to 318) K. The densities have been measured in the same temperature range under atmospheric pressure. The densities, isobaric heat capacities, isentropic and isothermal compressibilities, isobaric thermal expansions, and internal pressures as functions of temperature and pressure have been calculated using the experimental results and the literature isobaric heat capacities for the atmospheric pressure. A modified method, based on the suggestion of Davis and Gordon (J. Chem. Phys. 1967, 46, 2650-2660), has been applied. The effect of pressure and temperature on the isothermal compressibility, isobaric thermal expansion, isobaric heat capacity, and internal pressure is discussed.