Adsorption isotherms of methane, ethane, ethylene, propane, propadiene, butane, 2-methylpropane, and carbon dioxide on silica gel are given at three temperatures (278 K, 293 K, and 303 K). The results at pressures up to 0.8P/P-s for the subcritical compounds and up to 3500 kPa for the supercritical compounds are measured using an automated apparatus.