INTERACTION STUDIES FROM VISCOMETRIC AND VOLUMETRIC BEHAVIOR OF BINARY-SYSTEMS OF CHLORINATED METHANES WITH NORMAL ALKANOLS AT 303.15 K

Viscosities and densities have been measured For mixtures of chlorinat ed methanes mixing with normal alcohols at 303.15 K. The chlorinated m ethanes include carbon tetrachloride, chloroform and dichloromethane. The normal alcohols are methanol, ethanol, 1-proponal and l-butanol. E xcess viscosities eta(E) and molar excess volumes V-E were obtained to gether with the Grunberg-Nissan interaction parameter d and interactio n energy for flow of activation W-vis. The relation between the result ing eta(E) and V-E has been tested using existing equations. Interacti ons between molecules are discussed in detail. Specific interactions a re not dominant or very weak and almost nonexistent between different components. A new assumption is proposed that interaction of C atom of chlorinated methanes with (C-C) backbone in ROH increases with decrea sing number of Cl atoms in chlorinated methanes for screening the inte raction.