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    Potassium iodide

    Potassium iodide in Tradeasia

    IUPAC Name

    Potassium iodide

    Cas Number


    HS Code






    Basic Info


    White Solid

    Common Names

    Pima; Kali iodide; Thyro-Block


    25kg /bag

    Brief Overview


    Potassium Iodide exist as colourless or white cubic crystals or granules and becomes yellowish when exposed to bright light due to photochemical decomposition to liberate traces of free iodine.


    Manufacturing Process


    Method 1:

    Step 1: Potassium iodide is made by absorption of iodine in potassium hydroxide:

    Step 2: Potassium iodate, KIO3 is then separated from the product mixture by crystallization and filtration. The remaining iodates are removed by evaporation of the solution and other processes, such as carbon reduction or thermal decomposition at 600ºC to iodide:

    2KIO3 → 2KI + 3O2

    Method 2: Treat iron turnings with iodine solution. The product, Fe3I8•16H2O, is boiled with 15 wt% potassium carbonate solution according to the equation below:

    Fe3I8•16H2O + 4K2CO3 → 8 KI + 4CO2 + Fe3O4 + 16H2O

    Method 3: Potassium iodide can be prepared by reacting hydriodic acid with potassium bicarbonate according to the equation below:

    HI + KHCO3 → KI + CO2 + H2O

    Agriculture Industry: Used as a fungicide


    Medical Industry:

    • Used as a nutritional supplement in animal feeds and food additives for human consumption.
    • Used in nuclear medicine scintigraphy for thyroid protection.


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