Ammonium orthomolybdate

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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).

Excerpt from the Wikipedia article “Ammonium orthomolybdate”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Foto: Faksvaag, Jon-Erik / Norsk Farmasihistorisk Museum, CC BY-SA 4.0, via Wikimedia Commons.