The interrelationship between partial molal expansibility and the solute induced shift in the temperature of maximum density of water

The effect of solutes on the temperature of maximum density (TMD) of water is analysed with emphasis upon the applicability of thermodynamic dissection of the observed change in the TMD (Δθ obs ) into ideal (Δθ id ) and structural (Δθ st ) components. The use of TMD as a probe for examining the effect of dissolved solutes on the structural properties of water is critically compared with methods based upon apparent and partial molal expansibilities.