The equilibrium solubilities of two pure solid polycyclic aromatic hydrocarbons (9-nitroanthracene and 2-methylanthracene) and a nearly equimolar 9-nitroanthracene/2-methylanthracene mixture in super-critical CO2 were measured at temperatures ranging from 318 K to 348 K and pressures from 12.2 MPa to 35.5 MPa. The measured solubilities for pure solid were correlated using a semiempirical model. The calculated results show satisfactory agreement with the experimental data. It was observed that in the ternary system (9-nitroanthracene + 2-methylanthracene + CO2) the solubility of each substance was increased when compared to the binary systems (pure substance + CO2).