Patent ID: 8791310

Claim:
A process for producing a fluoroalkyl iodide (2) represented by formula (2), comprising: a first reaction step of supplying and reacting tetrafluoroethylene and a radical initiator to a fluoroalkyl iodide (1) represented by formula (1), to thereby form a reaction mixture (1), followed by a second reaction step of supplying and reacting a radical initiator, or a radical initiator and tetrafluoroethylene, to the reaction mixture (1) formed in the first reaction step, to thereby form a reaction mixture (2) comprising the fluoroalkyl iodide (1) represented by formula (1) and the fluoroalkyl iodide (2) represented by formula (2): R f I (1) R f CF 2 CF 2 I (2) wherein R f is a fluoroalkyl group having at most 4 carbon atoms, the maximum amount of tetrafluoroethylene present in each reaction step is maintained to be within a range of from 0.01 to 10 mol % to the total number of moles of the fluoroalkyl iodide (1) and the fluoroalkyl iodide (2), the maximum amount of the radical initiator present in each reaction step is adjusted to be from 0.0005 to 0.5 mol % to the total number of moles of the fluoroalkyl iodide (1) and the fluoroalkyl iodide (2), and the conversion of the fluoroalkyl iodide (1) in the reaction mixture (2) after completion of the second reaction step is adjusted to be at most 10%.