Method for stabilizing perfluorodioxolane compound, composition containing perfluorodioxolane compound, and method for producing perfluorodioxolane compound polymer

The present invention provides a method for stabilizing a perfluorodioxolane compound, the method comprising: causing a quinone compound to be present in a composition containing one or more perfluorodioxolane compounds represented by general formula (1) and one or more perfluorodioxolane compounds represented by general formula (2), the one or more perfluorodioxolane compounds being selected from the group consisting of perfluorodioxolane compounds represented by general formula (1) and perfluorodioxolane compounds represented by general formula (2); the quinone compounds are one or more compounds selected from the group consisting of quinone compounds represented by general formula (3) and quinone compounds represented by general formula (4). (In formula (1), Rf1 and Rf2 each independently represent a fluorine atom or a C1-6 perfluoroalkyl group, and an ether bond may be present between any carbon-carbon bonds of the perfluoroalkyl group. In addition, Rf1 and Rf2 may be bonded to each other to form a ring.