The Critical Properties of Dimethyl Carbonate (DMC) + Alkanes Mixtures

An experimental apparatus for the measurement of critical properties based on the low residence time flow method was established. The standard uncertainties of temperatures and pressures are estimated to be less than 0.2 K and 5.2 kPa, respectively. The critical temperatures and critical pressures of five binary mixtures, DMC + hexane, DMC + heptane, DMC + octane, DMC + nonane and DMC + decane are reported for the first time. Experimental results show the critical temperatures of the binary mixtures tend to change as parabola project on the DMC ratio while the critical pressures increase with the ratio of components have higher critical pressures. The experimental results are correlated using the Redlich-Kister equations. The average absolute deviations are less than 0.04% for critical temperatures and 0.25% for critical pressures.