1,3-DIIODOHYDANTOIN COMPOUND AND PROCESS FOR PRODUCTION THEREOF

摘要

Disclosed is a means for preventing the release of I₂ during the production or storage of a 1,3-diiodohydantoin compound to thereby prevent the reduction in purity of the compound or overcome various disadvantages caused by I₂. A process for producing a 1,3-diiodohydantoin compound comprising the steps of providing a wet material containing the 1,3-diiodohydantoin compound, and (1) contacting the wet material with a heated air to dry the wet material or (2) lyophilizing the wet material; a method for storage of a 1,3-diiodohydantoin compound comprising the step of storing the 1,3-diiodohydantoin compound under the temperature condition of 15°C or lower; and a 1,3-diiodohydantoin compound having a free I₂ content of 1% by mass of less.