Na4V2O7

Na4V2O7, also known as sodium pyrovanadate, is an inorganic chemical compound. It is a salt formed from sodium cations (Na+) and the pyrovanadate anion (V2O74-). This compound typically exists as a white or pale yellow crystalline solid. Its chemical structure features two vanadium atoms linked by an oxygen bridge, with the overall charge balanced by four sodium ions.

Sodium pyrovanadate is soluble in water, forming alkaline solutions due to hydrolysis of the pyrovanadate anion. It can be synthesized through various chemical reactions, often involving the reaction of vanadium pentoxide with sodium hydroxide or sodium carbonate under specific conditions. The compound is a member of the vanadate family, which are compounds containing vanadium in various oxidation states, most commonly +5.

Na4V2O7 has found applications in several fields. It has been investigated as a precursor material for the synthesis of other vanadium-containing compounds and catalysts. In some research contexts, it has been explored for its electrochemical properties, particularly in the development of batteries. Its use in analytical chemistry has also been noted, where it can serve as a reagent. The compound's stability and reactivity are dependent on factors such as temperature and pH.