potassium iodide

noun

, Chemistry, Pharmacology.

a white, crystalline, water-soluble powder, KI, having a bitter saline taste: used chiefly in the manufacture of photographic emulsions, as a laboratory reagent, in the preparation of Gram's solution for biological staining, and in medicine as an expectorant and to treat thyroid conditions.

potassium iodide

A white crystalline compound used in photography and medicine and as a reagent in chemical analysis. It is also added to table salt to prevent goiter and other iodide-deficiency disorders. Chemical formula: KI.

In the elephant toothpaste experiment, yeast or potassium iodide can be used as a catalyst.

But the shops usually do not carry potassium iodide in large quantities, and many have sold out and now have long waiting lists.

They have been going into radiated areas without any protection or potassium iodide.

It is very slightly soluble in water, but readily dissolves in potassium iodide solution.

The salts were added and dissolved before the addition of the potassium iodide.

A strong solution must not be used, since it liberates iodine from potassium iodide.

Ammonic chloride, like hydrochloric acid, removes the colour, which may be restored on the addition of more potassium iodide.

Antimonic chloride and potassium iodide react, forming antimonious chloride and free iodine.

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