Various thermodynamic properties for binary systems with tertiary ethers

Isothermal P, x data and excess enthalpies CHE) were measured for the binary systems 2-methyl-1-butene + methyl tert-butyl ether, 2-methyl-1-pentene + tert-amyl ethyl ether, tert-amyl ethyl ether + ethanol, and tert-amyl methyl ether + tert-amyl ethyl ether at approximately 363 K using a static apparatus and an isothermal flow calorimeter. Temperature dependent parameters were fitted simultaneously to the experimental data. Infinite dilution activity coefficients (gamma(i)(infinity)) were derived from the vapor-liquid equilibrium (VLE) data in the dilute region using a flexible Legendre polynomial.