Compound iodine in salt with sodium and potassium (KI) or KIO3 in.Iodine can be obtained in the form of very pure by reaction between copper (II) sulfate with KI. There are also other ways to separate chemical elements. Although this element is quite rare, kelp and some other tree species have the ability to absorb and concentrate iodine in your body, leading to carry iodine into natural food chains and help in the preparation of iodine have low prices.For the effect of solution with the oxidant to oxidation of I-into I2.For example the equation: 2NaI + Cl2-> 2NaCl + I2
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