Primarily used as a highly efficient iodinatinghalogenating reagent in organic synthesis. It is also used as an oxidizing reagent for preparing nitriles and in iododesilylation and other functional-group transformations.

Serves as a convenient economical source of electrophilic iodine (I) for selective iodination of organic compounds. Its solid form makes it easier to handle than molecular iodine in many synthetic applications.

DIH is a pale-yellow to light-brown crystallinepowdered compound. It is an oxidizing corrosive reagent and should be handled with appropriate precautions.