Densities of carbon dioxide plus hydrogen sulfide mixtures from 220 K to 450 K at pressures up to 25 MPa
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This paper reports 850 pVT measurements at temperatures between 220 K and 450 K at pressures up to 25 MPa for four gravimetrically prepared CO2 (1) + H2S (2) mixtures with x1 = 0.5011, 0.7067, 0.9045, and 0.9393. The measurements utilized a Burnett isochoric technique designed to provide both vapor and liquid densities. A detailed error analysis indicates that the densities are accurate to better than 0.08% and 0.3% for the vapor and liquid phases, respectively. Mixture second and third virial coefficients derived from the measurements and correlations to represent them and 52 derived vapor-liquid saturation boundary conditions also are included.