What Is the Molar Mass of Potassium Iodide?


Quick Answer

The molar mass of potassium iodide is 166 grams/mole. Its molecular formula is KI, and it is a stable salt compound that is utilized in the medical field.

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Full Answer

Potassium iodide is used to help block the absorption of radioactive iodine by the thyroid gland. Certain nuclear medicine tests utilize radioactive iodine to visualize various organs in the body. When radioactive iodine is absorbed into the bloodstream it can damage the thyroid gland. For this reason, potassium iodide is taken prior to these nuclear medicine tests in order to protect the thyroid gland. The potassium iodine is absorbed by the thyroid gland and blocks the radioactive iodine from entering the thyroid.

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