Maryam Hashemi - Faculty of Chemistry, University of Mazandaran, P. O. BOX ۴۵۳, Babolsar, Iran
Mehrdad Moosavi - Faculty of Chemistry, University of Mazandaran, P. O. BOX ۴۵۳, Babolsar, Iran
Abbas Ali Rostami - Faculty of Chemistry, University of Mazandaran, P. O. BOX ۴۵۳, Babolsar, Iran
Abdollah Omrani - Faculty of Chemistry, University of Mazandaran, P. O. BOX ۴۵۳, Babolsar, Iran

In this paper, study on thermodynamic, optical properties of ethylene glycol and 1-heptanol binary systems at different temperatures and whole concentration range and atmospheric pressure have done using experimental measurements of density and refractive index. Using experimental measurements and calculation of different excess thermodynamic properties, detailed analysis have done on the behavior of aqueous diols mixtures and interaction between components.

Ethylene glycol, Density, Refractive index, Excess molar volume