Ammonium molybdate is a versatile molybdenum salt, typically existing as a colorless or pale yellow-green crystalline solid. Widely used as an analytical reagent to detect phosphates, arsenates, and lead, it is also an essential micronutrient in crop fertilizers and a biological stain

Ammonium Molybdate has been used to Catalyst in Copper Phal cyanine Crude, Source of Molybdate Ions, Analytical Reagents, and Catalyst in Dehydration and Desulfurization in Coal Technology, Catalyst Manufacture, Fertilizer Micronutrients, Animal Feed Applications, Corrosion Inhibitors, Metal Surface Treatment, High Purity Metals and Alloys (Sinter), Pigment Manufacture , Also it used for smelting molybdenum Ferro and as raw material for molybdenum trioxide and metal molybdenum powder production and also often used in the oil industry.

Ammonium heptamolybdate is easily prepared by dissolving molybdenum trioxide in an excess of aqueous ammonia and evaporating the solution at room temperature.
CAS No. 12054-85-2. Molecular Formula, (NH4)6Mo7O24.4H2O, Molecular Weight, 1235.86. H.S. Code, 2841.7090