Potassium iodide is an inorganic compound with formula KI. This white salt is the most commercially significant iodide compound, with approximately 37,000 tons produced in 1985. It is less hygroscopic than sodium iodide, making it easier to work with. Aged and impure samples are yellow because of oxidation of the iodide to iodine.
Potassium iodide is used medicinally in tablets, usually containing 130 mg of KI, or as a "saturated solution of pota...
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Potassium iodide is an inorganic compound with formula KI. This white salt is the most commercially significant iodide compound, with approximately 37,000 tons produced in 1985. It is less hygroscopic than sodium iodide, making it easier to work with. Aged and impure samples are yellow because of oxidation of the iodide to iodine.
Potassium iodide is used medicinally in tablets, usually containing 130 mg of KI, or as a "saturated solution of potassium iodide" (SSKI) which in the U.S.P. generic formulation contains 1000 mg of KI per mL (or 500 mg KI in 10 drops, assumed to be 0.5 mL).
Potassium iodide is ionic, KI. It crystallises in the sodium chloride motif. It is produced industrially by treating KOH with iodine.
Since the iodide ion is a mild reducing agent, I is easily oxidised to I2 by powerful oxidising agents such as chlorine:
This reaction is employed in the isolation of iodine from natural sources. Even air will oxidize iodide as evidenced by the observation of a purple...
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