tungsten pentoxide

{{Short description|Blue solid oxide of tungsten formed by reaction of tungsten trioxide and tungsten metal}}

{{Accuracy|date=February 2012}}

Tungsten pentoxide ({{chem2|W2O5}}) was reported in early literature but proved to have the stoichiometry W₁₈O₄₉.Wells A.F. (1984) Structural Inorganic Chemistry 5th edition Oxford Science Publications {{ISBN|0-19-855370-6}} Sometimes called mineral blue, it is a blue solid formed by the reaction of tungsten trioxide, WO₃, and tungsten metal at 700 °C.