Abstract
In this paper, experimental data on the phase behavior of the binary system (methane + 5-α-cholestane) are presented. Experiments were carried out according to the synthetic method. The temperature range investigated was from 320 K to 450 K. The pressures applied did not exceed 250 MPa. Vapor−liquid equilibria have been measured for 18 different mixtures. Additionally, the melting curve of pure 5-α-cholestane and the course of the three-phase curve (solid 5-α-cholestane + liquid + vapor) was determined. The second critical end point was located at a temperature T = (342.2 ± 0.5) K, a pressure p = (193.3 ± 0.4) MPa, and a mole fraction of 5-α-cholestane in the critical fluid phase x = 0.049 ± 0.004.
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