EFFECT OF HYDROGENATION ON DENSITY AND VISCOSITY OF SUNFLOWER-SEED OIL

The densities and viscosities of unhydrogenated and hydrogenated sunfl owerseed oils have been determined at temperatures ranging from 25 to 50 degrees C at 5 degrees C intervals. The densities of these oils var y linearly with temperature. The Values of the parameters for the dens ity equation have been calculated. Smooth curves were obtained when th e changes in viscosity with temperature were plotted in the form of In eta vs. 1/T. The energy of activation, the free energy of activation, and the entropy of activation have been calculated at 25 degrees C, a nd they decreased with the degree of unsaturation in the fatty acid ch ains of the sunflowerseed oil.