P-ρ-T Data and Modeling for Propan-1-ol + n-Octane or n-Nonane or n-Decane from 313.15 K to 363.15 K and 1 MPa to 20 MPa

High-pressure experimental pressure density temperature data for the propan-l-ol (1) + n-octane (2), propan-l-ol (1) + n-nonane (2), and propan-l-ol (1) + n-decane (2) binary systems are presented. Measurements were conducted over the entire composition range, in the temperature range of 313.15 to 363.15 K, from approximately 1 to 20 MPa, by using an Anton Paar DMA HP densitometer and a newly commissioned pressurizing network. The binary experimental density data is correlated by the five parameter modified Toscani Szwarc equation of state, which demonstrates good correlation of the data. Excess molar volumes for the measured systems were determined as a function of pressure and temperature and were found to be positive for the measurement range considered in this work. Derived property data (thermal expansivity and isothermal compressibility) were also calculated for these systems and were found to be nonlinear in most instances. The effects of temperature and pressure on these properties were also discussed. The nonideality of the mixture properties was attributed to differences in the size and shape of the molecules and the energy interactions due to the polarity of the propan-l-ol molecules.