Corresponding‐states and parachor models for the calculation of interfacial tensions

Abstract

Abstract A generalized corresponding‐states model based on two reference fluids and a parachor correlation were developed for the prediction of interfacial tensions for non‐polar and weakly polar pure fluids and mixtures. Pure methane and n‐octane were chosen as reference fluids of the corresponding‐states model. The two models were tested on 86 pure substances, more than 30 binary and multicomponent mixtures, 11 naphtha reformate cuts, 6 petroleum cuts and 2 North Sea oil mixtures. The calculated results were found to be in good agreement with experimental data.