NH4VO3
NH4VO3, commonly known as ammonium metavanadate, is an inorganic salt comprising the ammonium cation (NH4+) and the metavanadate anion (VO3−). In this compound, vanadium is in the +5 oxidation state. The solid is typically white to pale yellow and forms crystalline material that is soluble in water. Aqueous NH4VO3 solutions exhibit the characteristic yellow color associated with vanadium(V) species.
NH4VO3 can be prepared by combining sources of ammonium ions with metavanadate in solution and allowing crystallization
The compound is relatively stable under ambient conditions but decomposes upon strong heating, releasing ammonia and
NH4VO3 serves as a convenient source of vanadium(V) for laboratory synthesis and as a reagent in inorganic
Like other vanadium compounds, ammonium metavanadate can be irritant to skin, eyes, and the respiratory tract.