Platinum(II) iodidePlatinum iodide is a binary inorganic compound of platinum and iodine with the chemical formula.SynthesisProduction of platinum iodide can be by heating of platinum(II) chloride with potassium iodide:Chemical propertiesPlatinum iodide decomposes when heated:Physical propertiesPlatinum iodide forms black crystals of several modifications. It is insoluble in water, ethanol, acetone, or ether, but is soluble in ethylamine and hydrogen iodide.Related compoundsPotassium tetraiodoplatinate is a soluble derivative of PtI2.