Enthalpy of solution of squalane in alcohols

Enthalpy of solution at 25 degreesC or squalane in butyl alcohols and 1-oct anol is determined calorimetrically. The endothermic effect of dissolution increases in tile order 1-OctOH < BuOH < i-BuOH < t-BuOH. A linear correlat ion is found between the enthalpies of solution of squalane and hexadecane, from which tile enthalpy of solution of squalane in methanol is determined . The contributions of the cavity formation and solute-solvent interaction to the enthalpy of solution are estimated by multiple regression analysis. Tile enthalpy of cavity formation is only slightly dependent on the length of the main chain of an alcohol and also oil the branching type, varying in the order 1-OctOH similar to BuOH similar to i-BuOH < MeOH similar to s-Bu OH < t-BuOH. Interaction of squalane with alcocols increases in the order M eOH < t-BuOH < BuOH < similar to i-BuOH similar tos-BuOH < 1-OctOH.