Isothermal vapor-liquid equilibrium data of the 2-propanol + n-hexane system were measured at near-critical temperatures to be compared with similar data for the ethanol + n-hexane and methanol + n-hexane systems. The critical pressure was determined from the critical opalescence of the mixtures. A circulating type apparatus with a view cell was used. These mixtures are highly nonideal due to the association of the alcohol. The data could be correlated with sufficient accuracy by using the Peng-Robinson-Stryjek-Vera equation of state with Wong-Sandler mixing rules.