VAPOR-LIQUID-EQUILIBRIA OF 2-METHYL-1-PROPANOL WITH OCTANE

Isobaric and isothermal vapor-liquid equilibria were measured for the 2-methyl-1-propanol + octane system at a pressure of 101.3 kPa and a t emperature of 373.15 K. The measurements were made in an equilibrium s till with circulation of both the vapor and liquid phases. The 2-methy l-1-propanol + octane system forms a minimum boiling azeotrope or maxi mum pressure azeotrope. The azeotropic data are x(1)(AZ) = 0.670 and T (AZ) = 376.58 K for the isobaric and x(1)(AZ) = 0.654 and P(AZ) = 90.6 7 kPa for the isothermal system. The activity coefficients of the syst em were best correlated with the nonrandom two-liquid (NRTL) equation for the isobaric and with the Wilson equation for the isothermal syste m.