Ammonium orthomolybdate

Ammonium orthomolybdate is the inorganic compound with the chemical formula (NH4)2MoO4. It is a white solid that is prepared by treating molybdenum trioxide with aqueous ammonia. Upon heating these solutions, ammonia is lost, to give ammonium heptamolybdate ((NH4)6Mo7O24.4H2O). Ammonium orthomolybdate is used as a corrosion inhibitor and is an intermediate in some schemes to win Mo from its ores.

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