Supercritical fluids vary in density from that over a whole range by manipulating temperature and pressure. One of the characteristic features of supercritical fluids is “clustering/solvation” or “local density augmentation, ” which is due to solute/solvent intermolecular interaction. This paper presents the results reported in recent experimental and theoretical works on clus-tering, intermolecular interactions and aggregate formation. In addition, recent publications about the partial molar volume and dielectric constant are also presented.
