The gas-phase pyrolysis of n-C4F10 has been studied experimentally in a plug flow, isothermal alpha-alumina reactor at atmospheric pressure and various residence times over the temperature range of 873 to 1148 K. The major products are C2F6, C2F4, C3F8, and C3F6 (CF3-CF=CF2). Minor products include cycio-C4F8 (c-C4F8) and CO2. CF4 is detected in trace amounts at high temperatures. A kinetic reaction scheme involving 20 species and 30 reactions is developed and used to model n-C4F10 pyrolysis. A generally satisfactory agreement between experimental and modeling results is obtained on the conversion levels of n-C4F10 and the rates of formation of C2F6 and C3F8.