The solubility parameters of cellulose acrylate (CEA) were examined by inverse gas chromatography (IGC). The test probes were pentane, hexane, heptane, octane, nonane, ether, acetone, tetrahydrofuran, toluene, chloroform, isopropanol, and hexanol. The minimal test probe was injected into chromatographic column in order to achieve the infinite dilution conditions. The retention times of the test probes were determined and Flory-Huggins interaction parameters (chi) and solubility parameters (delta(2)) were calculated according to DiPaola-Baranyi and Guillet method from experimentally collected retention data for the series of carefully selected test probes. The Hansen's three-dimensional solubility parameters concept is applied to determine the components (delta(d), delta(p), delta(h)) of total solubility parameter (delta(T)). The solubility parameter (delta(T)) was increased with increasing temperature.