Ammonium Potassium Chromate, (NH₄)KCrO₄

Ammonium Potassium Chromate, (NH₄)KCrO₄, is prepared by neutralising a solution of potassium dichromate with ammonia. Also the compound, 2(NH₄)₂CrO₄.3K₂CrO₄, has been obtained in the form of yellow needles of density 2.403 at 15° C.