natriumjodidsymporteren

Natriumjodid, or sodium iodide, is an inorganic compound with the chemical formula NaI. It appears as a white crystalline solid that is highly soluble in water and forms clear solutions. It is a source of iodide ion (I−) and is commonly used in chemical synthesis and analytical applications.

Sodium iodide is typically produced by direct combination of sodium metal with iodine, producing NaI. It can also be obtained via reactions involving iodide-containing precursors and sodium salts under appropriate conditions. In solution, NaI behaves as a strong source of iodide and is often used as a reagent in iodometry and other iodide-based processes. It is compatible with various solvents but is moisture-sensitive in practical handling.

Major applications of sodium iodide include salt iodization programs to prevent iodine deficiency disorders, where NaI serves as a convenient iodide source. It is also a precursor for the synthesis of organoiodine compounds, pharmaceuticals, and specialty chemicals. In the field of radiation detection, sodium iodide doped with thallium (NaI(Tl)) is a widely used scintillator for gamma spectroscopy and medical imaging. In some chemical laboratories, NaI is used in iodometric titrations and as a reagent for preparing iodide-containing solutions.

Safety and handling considerations include the irritant potential of iodide to eyes and skin and the importance of avoiding ingestion or inhalation of dust. Sodium iodide should be stored in a dry, tightly closed container away from oxidizers and moisture. Excess iodide intake can affect thyroid function; appropriate safety measures and regulatory guidelines should be followed in industrial and medical contexts.