Ammonium Molybdate, (NH₄)₂MoO₄

Ammonium Molybdate, (NH₄)₂MoO₄, is obtained by dissolving ordinary ammonium molybdate or an acid molybdate in ammonia. The crystalline normal salt may be obtained by careful evaporation, or, better, by the addition of alcohol at 45° C., in small prisms of density 2.261, which evolve ammonia in the air and are rapidly decomposed by water.