Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Assessment of a Parachor Model for the Surface Tension of Binary Mixtures



Alexandra Metallinou Log, Vladimir Diky, Marcia L. Huber


We constructed an experimental database for the surface tension of binary mixtures containing a wide variety of fluids, from the chemical classes (water, alcohols, amines, ketones, linear and branched alkanes, naphthenes, aromatics, refrigerants, and cryogens). The resulting data set includes 65 pure fluids and 154 binary pairs with a total of 8205 points. We used this database to test the performance of a parachor model for the surface tension of binary mixtures. The model uses published correlations to determine the parachors of the pure fluids. The model has a single, constant binary interaction parameter that was found by fitting experimental mixture data. It can be also used in a predictive mode when the interaction parameters are set to zero. We present detailed comparisons on the performance of the model for both cases.
International Journal of Thermophysics


binary mixtures, parachor, surface tension


Log, A. , Diky, V. and Huber, M. (2023), Assessment of a Parachor Model for the Surface Tension of Binary Mixtures, International Journal of Thermophysics, [online],, (Accessed April 23, 2024)
Created June 7, 2023, Updated June 8, 2023