Ammonium chlorostannate, preparation

Preparation of Ammonium Chlorostannate. Prepare a 60% tin(IV) chloride solution in concentrated hydrochloric acid and add to it a warm saturated solution containing an equimolecular amount of ammonium chloride. Cool the solution with a mixture of ice and sodium chloride, filter off the crystalline precipitate using a glass filter No. 3, and wash the precipitate on the filter with the smallest possible amount of concentrated hydrochloric acid cooled to 0 °C. 

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