Iron(III) iodide is a chemical compound composed of iron and iodine, with the formula FeI3. It is a dark brown or black solid that is typically formed by the reaction of iron(III) oxide with iodine. This compound is known for its use in various chemical reactions and as a source of iodine in laboratory settings. In addition to its laboratory applications, iron(III) iodide can also be used in the synthesis of other chemical compounds. It is important in the field of inorganic chemistry and can serve as a catalyst in certain reactions. Proper handling and storage are essential due to its reactivity and potential hazards.