In this investigation, using the static equilibrium method, the solubility of 3-nitrophthalonitrile in 12 pure solvents, namely, n-propanol, methanol, ethanol, isopropanol, ethylene glycol (EG), acetone, toluene, N-methyl-pyrrolidone (NMP), n-butanol, ethyl acetate, isobutanol, and water, was investigated through experiment over a temperature range of 278.15-323.15 K under ambient pressure p = 101.2 kPa. The mole fraction solubility of 3-nitrophthalonitrile in above solvents increased as the temperature increased and had the following order in different solvents: NMP > acetone > ethyl acetate > EG > methanol > ethanol > toluene > n-propanol > isopropanol > n-butanol > isobutanol > water. The solubility was correlated using the Wilson model, lambda h equation, modified Apelblat equation, and NRTL model. Results indicated that the maximum values of root-mean-square deviation and relative average deviation were 11.75 x 10(-4) and 9.26 x 10(-2), respectively. The relative average deviation values achieved with the modified Apelblat equation were lower than those with the other equations for a given solvent. Additionally, the mixing properties and reduced excess enthalpy and activity coefficient under infinitesimal concentration were derived.