The carbon disulfide-methanol liquid-liquid critical point is studied using a Monte

Carlo simulation of classical Stockmayer particles. A low energy configuration for the segregated

two component system is determined using standard Monte Carlo methods then a modified

Gibbs ensemble is employed to study the effect of transferring particles from one phase to

another. Rather than use the model for the entropy of mixing in the Gibbs ensemble, which is

of the regular solution type, a semi-quasi-chemical model is used which involves an interaction

energy. We are able to simulate the mixing of the two components as the temperature approaches

the critical temperature from below. Further, a method is given whereby the simulation results

can be used to predict the critical temperature.

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