Abstract

In this work, a generalized equation based on the Wagner equation was used for estimating saturated vapor pressure of pure compounds. This model is presented for correlating the saturated vapor pressure of 40 pure compounds and 718 experimental data points. The new model was used for estimating the acentric factor of pure substances based on this saturated vapor pressure equation. Acentric factors of 300 compounds were calculated according to this equation and compared with the related reference values. The average absolute deviations (AAD%) show that the equation has good accuracy for estimating the saturated vapor pressure and acentric factor of pure compounds.

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