Tags: Chemical Compound, Chemical Substance.
Ammonium heptamolybdate is an odourless crystalline compound ranging in colour from white to yellow-green. It is usually encountered as the tetrahydrate whose chemical formula is (NH4)6Mo7O24·4H2O. It is often referred to as ammonium paramolybdate or simply as ammonium molybdate although ammonium molybdate can also refer to ammonium orthomolybdate (NH4)2MoO4 and several other compounds.