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Recipe of the Week – Week 11: Potassium Iodide

Continuing our new series of chemical recipes, we bring you week 11 – potassium iodide (KI).

Remember that when preparing any of our recipes, you should always wear appropriate PPE.

What is potassium iodide?

An odourless white solid, potassium iodide has been used medically since 1820 and is classified as an essential medicine by the World Health Organisation. As a medication it is used forbreaking up mucus in airways and treating hyperthyroidism, and is used in radiation emergencies – a preventative saturated solution was given to over 15 million Polish adults and children following the Chernobyl disaster. It can also be taken as a dietary supplement for humans and animals with low iodine intake in their diet. Industrially, it is used in film photography when used with silver nitrate to make silver iodide.

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Scan the QR codes for classroom experiments to follow with your safe and prepared potassium iodide.