NONAZEOTROPY IN THE SYSTEM METHYL ETHANOATE PLUS 1,2-EPOXYBUTANE

New vapor-liquid equilibrium data for the binary system methyl ethanoa te + 1,2-epoxybutane are reported at 35 and 101.3 kPa and at 298.15 K. It is shown that no azeotropes are present in the system, in disagree ment with data reported by others who claim that two azeotropes are pr esent at 298.15 K. We claim that previously reported data are in error because of impurities in the reagents and experimental errors. Accord ing to our results, the system methyl ethanoate + 1,2-epoxybutane beha ves like a regular solution and its vapor phase can be considered prac tically ideal so that it cannot fulfill the necessary conditions for m ultiple azeotropy. The data were satisfactorily correlated using the r egular model and the Wisniak-Tamir equation.