Excess enthalpies of {CH3(CH2)nOH, n = 3–12} + methyl methylthiomethyl sulfoxide or dimethyl sulfoxide at 298.15 K

Abstract

Excess enthalpies of nine mixtures between methyl methylthiomethyl sulfoxide (MMTSO) or dimethyl sulfoxide (DMSO) and each of aliphatic alcohols {CH3(CH2)nOH,n=3–11} have been determined at 298.15K. All the systems show the positive enthalpies over the whole range of mole fraction. Excess enthalpies of MMTSO+alcohols are larger than that of DMSO+alcohols and increased with increasing the number of methylene groups of alcohols. The excess partial molar enthalpies at infinite dilution of butane-1-ol showed the boundary between the two linear relationships obtained between those of MMTSO or DMSO and dipole–dipole interaction of aliphatic alcohols{CH3(CH2)nOH,n=0–11}-sulfoxides.