Nátriumiodid

Nátriumiodid is the inorganic compound with the formula NaI. It is a white, crystalline solid that is highly soluble in water. It is the sodium salt of hydriodic acid. Nátriumiodid is used in various applications, including as a food supplement and in photographic processes. It is also employed in medicine, particularly in the treatment of iodine deficiency disorders and as a contrast agent in medical imaging. The compound can be prepared by reacting sodium hydroxide with hydriodic acid. In its solid form, it is hygroscopic, meaning it readily absorbs moisture from the air. When exposed to air and light, it can oxidize, leading to the formation of free iodine and a discoloration of the material. This oxidation can be inhibited by the addition of small amounts of sodium thiosulfate. Nátriumiodid is an ionic compound composed of sodium cations (Na+) and iodide anions (I-). It crystallizes in the rock salt structure. It is considered a common and relatively safe iodine source when used appropriately.