Behzad Khodakarami - Department of Chemical Engineering, Amir Kabir University of Technology, Tehran, Iran
Hamid Modarress - Department of Chemical Engineering, Amir Kabir University of Technology, Tehran, Iran

Excess surface tension of 58 binary mixtures are calculated by two newly modified models presented in this work and the results are compared with those calculated by two previous models. The calculated AAD% for the four models indicated the superiority of the two newly modified models in calculation of surface tension of the binary mixtures.