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…showed last 75 words of 503 total…ed to produce potassium iodide and 10% of the iodine is used as sodium iodide. Most of the rest is made into a variety of organic compounds. Silver iodide is used in photographic chemicals. (iii) The processing depends on the chemicals which need to be produced. The element reacts with alkali metal hydroxides. (iv) The world production of iodine is relatively small (under 10,000 tonnes per year), with the bulk coming from Chile, USA, Japan and Russia.