The best replacement for potassium iodide is iodine.

The best alternatives to potassium iodide are rated as following:

★★★★★	iodine
★★★★	potassium iodate
★★	potassium
★★	iodate
★★	kelp
★	sodium iodide
★	iodine from kelp
★	nascent iodine
★	potassium gluconate
★	potassium chloride
	potassium citrate
	potassium iodide
	iodide
	ki
	ammonium iodide
	potassium iodine
	sea kelp

Your alternative for potassium iodide is not listed? Suggest!

Speaking about potassium iodide, one probably shouldn't forget about lead nitrate.

Other search terms related to potassium iodide and their ratings are:

★★★★★	lead nitrate
★★★★★	silver nitrate
★★★★	chlorine
★★★★	hydrogen peroxide
★★★	iodine
★★★	lead (ii) nitrate
★★	potassium iodate
★★	chlorine water
★★	copper sulfate
★★	hydrogen peroxide equation
★	bromine
★	concentrated sulphuric acid
★	iontophoresis
	bromine water
	chlorine gas
	ozone
	sodium thiosulphate

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Google Trends

Scale is based on the average worldwide traffic of potassium iodide in all years. Click on graph for more.

potassium iodide

iodine

potassium iodate