A study has been made of the distribution of benzene, hexamethylbenzene, diphenyl, fluorene, p-terphenyl and 2,4,6-triphenylbenzene between n-octane and 12 polar solvents of different nature at a temperature of 20 degrees C +/- 1 deg. The laws governing change in the distribution constants of substances as a function of the structure of their molecules and the nature of the polar solvent have been established. With the use of data on the extraction of benzene and hexamethylbenzene, the question of the relationship of the contributions of the solvation of protons of the benzene ring and its pi-electron system to the total energy of solvation by the polar phase is discussed at a qualitative level. The most effective extractants for polycyclic aromatic hydrocarbons are proposed.