Measurement of activity coefficients at infinite dilution using gas-liquidchromatography. 10. Results for various solutes with the stationary phasesdimethyl sulfoxide, propylene carbonate, and N-ethylformamide

Using gas-liquid chromatography (GLC), activity coefficients at infinite di lution have been measured for 37 solutes (alkanes, alkenes, cyclic hydrocar bons, aromatic hydrocarbons, alcohols, ketones, ethers, aldehydes, esters, and halocarbons) in the solvents dimethyl sulfoxide, propylene carbonate, a nd N-ethylformamide. The measurements were carried out in the temperature r ange between 303.15 and 333.15 K. The obtained gamma(infinity) values are c ompared with published data, and the observed temperature dependence of the limiting activity coefficients is confirmed using excess enthalpy data. Fu rthermore, the selectivities and capacities of the investigated solvents fo r the separation of aliphatics from aromatics are compared.