phosphorus pentoxide

[ pen-tok-sahyd, -sid ]

noun

, Chemistry.

1. a white, deliquescent, crystalline powder, P 2 O 5 , that, depending upon the amount of water it absorbs, forms orthophosphoric acid, metaphosphoric acid, or pyrophosphoric acid, produced by the burning of phosphorus in dry air: used in the preparation of phosphoric acids, as a drying and dehydrating agent, and in organic synthesis.

phosphorus pentoxide

noun

1. a white odourless solid produced when phosphorus burns: has a strong affinity for water with which it forms phosphoric acids. Formula: P 2 O 5 (commonly existing as the dimer P 4 O 10 ) Also calledphosphoric anhydride

Example Sentences

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

The lower part of the whole apparatus was inclosed in a thick walled vessel, e, containing a layer of phosphorus pentoxide.

From Project Gutenberg