Ferrous iodide is a chemical compound composed of iron and iodine, with the formula FeI2. It typically appears as a dark brown or black solid and is known for its use in various chemical reactions and applications, including as a source of iodine in organic synthesis. This compound is classified as a ferrous salt, meaning it contains iron in the +2 oxidation state. Ferrous iodide can be produced by reacting iron with iodine, and it is soluble in water, making it useful in laboratory settings for studying iron and iodine interactions.