Isobaric Vapor−Liquid Equilibrium in the Systems 2-Methylpentane + Methyl 1,1-Dimethylethyl Ether, + Ethyl 1,1-Dimethylethyl Ether, and + Methyl 1,1-Dimethylpropyl Ether

Abstract

Vapor−liquid equilibrium data for the binary systems 2-methylpentane + methyl 1,1-dimethylethyl ether (MTBE), + ethyl 1,1-dimethylethyl ether (ETBE), and + methyl 1,1-dimethylpropyl ether (TAME) are reported at 101.3 kPa, including pure component vapor pressures. The measured systems, which deviate slightly from ideal behavior, can be described as symmetric regular solutions, and only the system 2-methylpentane + MTBE presents an azeotrope. Boiling points are correlated with the Wisniak−Tamir equation.