Abstract
The liquid–liquid coexistence curve of methanol + cyclohexane has been measured in the range 0.1≤P/MPa≤13.0. The difference in mole fraction between both branches of the coexistence curve has been found to be a more convenient order parameter than the volume fraction difference. The diameter of the coexistence curve has been found to show no anomaly within the experimental uncertainty. The pressure dependence of the correction to simple scaling terms are mostly masked by their estimated uncertainties. Reliable values for xc and Tc have been determined, being xc invariant with pressure within the experimental uncertainty. The data have been found to be compatible with the two-scale-factor universality hypothesis.
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