Interactions of potassium fluoride with coexistent components in water-dimethyl sulfoxide mixed solvent at different temperatures

► Partial molar volume indicates strong ion-solvent interaction in the DMSO solution. ► Partial molar compressibility results compliment partial molar volume results. ► Viscosity B-coefficient indicates the solvation effect of the solute. ► Positive ∂2Vφ0/∂T2 indicates that potassium fluoride acts as structure maker in DMSO. ► Negative dB/dT also shows that potassium fluoride acts as a structure maker.