What is a Potassium Iodide?

Potassium iodide, with the chemical formula KI, is an inorganic compound composed of potassium ions (K⁺) and iodide ions (I⁻). It is a white crystalline solid that is highly soluble in water and has good chemical stability. Potassium iodide has various applications in medicine, photography, and chemical synthesis. In the medical field, it is widely known as a thyroid-blocking agent used to protect the thyroid gland from radioactive iodine exposure. It is also used as an antiseptic and food additive (iodized salt). Proper storage requires a dry, cool, and dark environment.

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