pentoxide

The selenide was collected and dried in an atmosphere of nitrogen, and then in a vacuum, in presence of phosphorus pentoxide.

The nitrates are an important class of salts, and may be looked on as compounds of the bases with nitric pentoxide (N2O5).

Maleic anhydride is obtained by distilling fumaric acid with phosphorus pentoxide.

When heated with phosphorus pentoxide it yields acetone, water and some pseudo-cumene.

The phosphorus combines with the oxygen to form an oxide of phosphorus, known as phosphorus pentoxide.