Abstract

Using gas−liquid chromatography (GLC), activity coefficients at infinite dilution have been measured for 28 solutes (alkanes, alkenes, cyclic hydrocarbons, aromatic hydrocarbons, alcohols, ketones, ethers, aldehydes, esters, and halocarbons) in the solvents N-ethylacetamide, N,N-diethylacetamide, diethylphthalate, and glutaronitrile. The measurements were carried out in a temperature range between 303.15 K and 333.15 K. The obtained γ∞ values were compared with published data and the observed temperature dependence of the limiting activity coefficients was confirmed using excess enthalpy data. Furthermore, the experimental data are compared with the results of modified UNIFAC (Dortmund).

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