Solubilities of Carbon Dioxide in Carboxylic Acids under High Pressures

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The solubilities of carbon dioxide in lauric acid, palmitic acid and arachidic acid have been measured in a semiflow apparatus over the temperature range from 373.2 K to 473.2 K at pressures up to 5.07 MPa. A correlation is developed to describe the experimental data and to calculate the solubilities of carbon dioxide in these three heavy carboxylic acids. Henry’s constants and the partial molar volumes at infinite dilution of carbon dioxide are determined from the measured solubility data.