Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Limiting activity coefficients (y) of 1-propanol and 1-butanol in heptane and octane were determined at 10-K increments between 303 K and 343 K using a differential static cell equilibrium apparatus. The comparative tensimetric technique was employed because it is well suited for the systems and conditions examined. The new measurements supplement and extend previously released y1 data for some lower 1-alkanol in n-alkanes we determined by the inert gas stripping. The sets of data obtained by the two different experimental techniques show good mutual consistency. The present y1 data compare favorably also with other literature information, and their temperature trends are reasonably consistent with calorimetric data on limiting partial molar excess enthalpies.