| Abstract
| - Phase equilibria and saturated density for ethylene + methanol system at high pressures were measured at 278.15K and 283.65 K with a static-circulation apparatus. The experimental apparatus equipped with three Anton PaarDMA 512S vibrating tube density meters was previously developed for measuring vapor−liquid−liquid equilibriumat high pressures. Coexisting phase composition and saturated density of each phase can be measured by meansof the apparatus with a maximum temperature and pressure of 400 K and 20 MPa, respectively. The presentexperimental results include vapor−liquid, liquid−liquid, and vapor−liquid−liquid equilibria. The equilibriumcomposition and saturated density of each phase were determined by gas chromatograph and vibrating tube densitymeters, respectively. The experimental data were correlated with various equations of state.
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