Iodine: uses

The following uses for iodine are gathered from a number of sources as well as from anecdotal comments. I'd be delighted to receive corrections as well as additional referenced uses (please use the feedback mechanism to add uses).

  • iodide, and thyroxin which contains iodine, are used internally in medicine. A solution of KI and iodine in alcohol is used as a disinfectant for external wounds.
  • silver iodide is used in photography
  • nutrient
  • added to table salt for nutrition {stops goitres, (Derbyshire neck)}
  • deep blue colour in a starch solution is a sign of the free element

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