EXCESS MOLAR VOLUMES, EXCESS VISCOSITIES AND REFRACTIVE-INDEXES OF A QUATERNARY LIQUID-MIXTURE AT 298.15 K

Density, viscosity and refractive index values for the propan-2-ol + m ethylacetate + dichloromethane + n-pentane mixture have been measured at 298.15 K, over the concentration range. Excess molar volumes and vi scosities have been calculated. Fiery's statistical theory has been ap plied to predict the excess molar volumes and compare then to the expe rimental data. We have also applied Grunberg and Nissan's equation for calculating viscosities and Lorentz-Lorenz's equation for predicting refractive indices, by knowing the values of the pure components.