Densities of carbon dioxide plus hydrogen sulfide mixtures from 220 K to 450 K at pressures up to 25 MPa

This paper reports similar to 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 x(1) = 0.5011, 0.7067, 0.9045, and 0.9393. The measurements utilized a Burnett isochoric technique designed to provid e 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 der ived vapor liquid saturation boundary conditions also are included.