Critical properties for carbon dioxide + methanol, + ethanol, + 1-propanol, and + 1-butanol were measured using a variable-volume view cell apparatus. Binary mixtures with carbon dioxide mole fractions of 0.976 to 0.637 have been investigated up to 430 K and 175 bar. The dew point and bubble point of the mixtures were measured, particularly in the vicinity of the critical point, in narrow increments in the P-T projection, and the critical point was estimated using two adjacent dew and bubble points. The experimental results were compared with the literature values.

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