To cite this article: H. Modarress & M. Mohsen-Nia (2006) Experimental and theoretical studies of viscosities of ternary mixture [2-propanol+ethyl acetate+n-hexane] and its binary constituents at 298.15, 308.15 and 313.Experimental and theoretical studies of viscosities of ternary mixture [2-propanolQethyl acetateQn-hexane] and its binary constituents at 298.15, 308.15 and 313.15 K The viscosities of the ternary mixture [2-propanol þ ethyl acetate þ n-hexane] and its binary constituents; [2-propanol þ ethyl acetate], [2-propanol þ n-hexane] and [ethyl acetate þ n-hexane] were measured over the whole concentration range at three temperatures 298.15, 308.15 and 313.15 K. The M 4 cubic equation of state due to Mohsen-Nia et al. (M. MohsenNia, H. Modarress, G.A. Mansoori. Fluid Phase Equilibria, 206, 27 (2003)) was used along with the modified Eyring kinematic viscosity model to correlate the measured viscosity data and the interaction parameters for the binary mixtures are reported. The binary interaction parameters were successfully used for viscosity calculation of the ternary mixture.