Abstract
Gas chromatographic method has been used to measure the limiting activity coefficient of some aliphatic alcohols (ethanol, 1-propanol, 1-butanol and 1-pentanol), aromatic hydrocarbons (benzene, toluene, ethylbenzene, o-xylene and p-xylene), ketones (acetone and methylisobutylketone), ethylacetate and chlorobenzene in tetrahydroxyethylethylenediamine (THEEDA) and tetraethylpentamine (TEPA). The measurements involving THEEDA have been used to derive UNIFAC group interaction parameters for seven new pairs, while ten pairs of new group interaction parameters have been derived from the measurements on TEPA.
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