Acetate and acrylate are compounds
with weak polarity which show
a nonideal behavior. Phase equilibria of these systems play a significant
role as organic solvents in industrial processes. In this work, the
solubility behavior for the (CO2 + methyl methoxyacetate)
and (CO2 + methyl trans-3-methoxyacrylate)
mixtures at pressures from (5 to 20) MPa and various temperatures
(313.2, 333.2, 353.2, 373.2, and 393.2 K) are measured in the static
method with a variable-volume high pressure view cell. The experimental
results obtained in this research are correlated with Peng–Robinson
equation of state and van der Waals one-fluid mixing rule containing
two adjustable interaction parameters. The critical constants for
the Peng–Robinson equation of state were estimated using the
group contributions method. The Lee–Kesler method was used
to predict the acentric factor.