Densities, excess molar volumes, speeds of sound and isothermal compressibilities for {2-(2-hexyloxyethoxy)ethanol + n-alkanol} systems at temperatures between (288.15 and 308.15) K

The densities, ρ and the speeds of sound, u, for {2-(2-hexyloxyethoxy)ethanol (C6E2) + methanol, +1-propanol, +1-pentanol, and +1-heptanol} have been measured as a function of composition using an Anton-Paar DSA 5000 densimeter at temperatures (288.15, 293.15, 298.15, 303.15, and 308.15) K and atmospheric pressure over the whole concentration range. The ρ and u values were used to calculate excess molar volumes, VE, and excess molar isentropic compressibility, KS,mE, respectively. Also, thermal expansivity, α  , partial molar volume, V¯i, and partial molar volume of the components at infinite dilution, V¯i0, have been calculated. The variation of these properties with composition and temperature of the mixtures are discussed in terms of molecular interactions.