From Wikidoc - Reading time: 2 min
Ethylenediamine dihydroiodide (EDDI) is a water-soluble salt of ethylenediamine and hydrogen iodide. It is a colorless to light yellow crystalline powder. Its chemical formula is C2H6N2.2HI. It is nonflammable, but iodine may be released during a fire.
EDDI is used as a pet food additive and cattle feed additive with high bioavailability. It is used to prevent iodine deficiency. The United States Food and Drug Administration suggests a limit of intake to 50 mg/head/day.[1] Although EDDI is generally recognized as safe (GRAS) only as a nutrient source of iodine, administration of EDDI also has preventative effects on foot rot in cattle.[2]
EDDI may react with sulfates and release free iodine.[citation needed] Other iodine supplements in animal feed are calcium iodate (most stable) and potassium iodide (most water-soluble, least stable).