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Tungsten Di-iodide, WI2

Tungsten Di-iodide, WI2, is formed on passing iodine vapour over the metal heated to redness, or by heating the hexachloride at 400° to 450° C. in a current of dry hydrogen iodide. The substance is brown in colour, amorphous, infusible, insoluble in water, alcohol, and carbon disulphide. It is decomposed if sufficiently heated.

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