EXCESS MOLAR ENTHALPIES OF (BUTYLAMINE PLUS AN ETHER) AT 298.15 K

The excess molar enthalpies H-m(E) of butylamine + diethyl ether, +dip ropyl ether, +bis(1-methylethyl) ether, +dibutyl ether, +1,1-dimethyle thyl methyl ether, +1,1-dimethylpropyl methyl ether, +tetrahydrofuran, +tetrahydropyran, and +1,4-dioxane have been measured over the whole composition range at 298.15 K in order to investigate interactions bet ween butylamine and the three classes of ethers, namely straight chain , branched chain, and cyclic. All the mixtures show endothermic behavi or. The results reported here are compared to H-m(E) results for relat ed systems involving dibutylamine published recently by our group. The experimental results have been correlated using the NRTL and UNIQUAC equations.