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We present a simple site-based intermolecular potential model for carbon dioxide (the EPM model). It uses point charges and Lennard-Jones interactions centered at each atom. The model predicts a coexistence curve and critical properties quite close to the experimental values. The EPM model predicts a critical temperature of 313.4 f 0.7 K compared with an experimental critical temperature of 304 K. By rescaling the potential parameters of the EPM model to obtain the model denoted as "EPMT', wedoi:10.1021/j100031a034 fatcat:fdlzshftk5fjhmokp3ga2d62lq