The seeds of Jatropha curcas are a good source of oil, which can be used as a diesel substitute. In this paper, jatropha oil was extracted from the seeds with supercritical carbon dioxide (SC-CO2) at different temperatures [(308.15 to 328.15) K] and pressures [(20 to 50) MPa]. The maximum yield of 51.5% was obtained under the optimal conditions. Eight fatty acids in the extracted jatropha oil were identified with gas chromatography/mass spectroscopy (GC-MS). The solubility of the oil in SC-CO2 at definite temperature and pressure was calculated from the initial slope of the extraction curve of yield versus volumes of SC-CO2. The Chrastil equation and a modified Chrastil equation were applied to correlate the solubility data. The values of average absolute relative deviation (AARD) were (10.1 and 3.47) %, respectively, indicating the modified Chrastil equation is much better than the Chrastil equation, mainly due to the increase of parameters.