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  An iodate is a salt of iodic acid.[1] In the iodate anion, iodine is bonded to three oxygen atoms and the molecular formula is IO3. The molecular geometry of iodate is trigonal pyramid.

Iodate can be obtained by reducing periodate with a thioether. The biproduct of the reaction is a sulfoxide.[2]

Iodates are a class of chemical compounds containing this group. Examples are sodium iodate (NaIO3), silver iodate (AgIO3), and calcium iodate (Ca(IO3)2). Iodates resemble chlorates with chlorine instead of iodine.

In acid conditions, iodic acid is formed. Potassium hydrogen iodate (KH(IO3)2) is a double salt of potassium iodate and iodic acid and an acid as well. Iodates are used in the iodine clock reaction.


  1. ^ Merium-Webster definition
  2. ^ Qiu, Chao; Sheng Han; Xingguo Cheng; and Tianhui Ren (2005). "Distribution of Thioethers in Hydrotreated Transformer Base Oil by Oxidation and ICP-AES Analysis". Industrial & Engineering Chemistry Research 44 (11): 4151-4155. doi:10.1021/ie048833b. Retrieved on 2007-05-03. “Thioethers can be oxidized to sulfoxides by periodate, and periodate is reduced to iodate”
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Iodate". A list of authors is available in Wikipedia.
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