What is Potassium Iodide ?

Potassium iodide is ionic compound which iodine ions and silver ions can form yellow precipitate silver iodide (when exposes to light, it can decompose, it can be used to make high-speed photographic film), silver nitrate can be used to verify the presence of iodine ions.
Potassium iodide is the raw material for the manufacture of iodide and dyes.Used as photographic photosensitive emulsifier.In medicine, it is used as an expectorant, diuretic, goiter prevention and control agent, and as a preoperative drug for hyperthyroidism.It is a cosolvent for iodine and some insoluble metal iodides.For livestock feed additives.