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Potassium iodate (KIO3) is a chemical compound. It is sometimes used in radiation treatment, as it can replace radioactive iodine from the thyroid. See potassium iodide for more information on this use.
Additional recommended knowledge
Like potassium bromate, potassium iodate is occasionally used as a maturing agent in baking.
Potassium iodate is an oxidizing agent and as such it can cause fires if in contact with combustible materials or reducing agents. It can be prepared by reacting a potassium-containing base such as potassium hydroxide with iodic acid, for example:
It can also be prepared by adding iodine to a hot, concentrated solution of potassium hydroxide.
Conditions/substances to avoid include: heat, shock, friction, combustible materials, reducing materials, aluminum, organic compounds, carbon, hydrogen peroxide and sulfides.
Potassium iodate is used for iodination of table salt, because iodide can be oxidized by molecular oxygen to iodine under wet conditions. To prevent this US companies add thiosulfates or other antioxidants to the potassium iodide, while in some other countries potassium iodate is used as source for iodine. It is also an ingredient in baby formula milk.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Potassium_iodate". A list of authors is available in Wikipedia.|