phosphorus pentoxide
a white, deliquescent, crystalline powder, P2O5, 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.
- Also called phosphoric anhydride.
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How to use phosphorus pentoxide in a sentence
The selenide was collected and dried in an atmosphere of nitrogen, and then in a vacuum, in presence of phosphorus pentoxide.
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.
An Elementary Study of Chemistry | William McPhersonThe lower part of the whole apparatus was inclosed in a thick walled vessel, e, containing a layer of phosphorus pentoxide.
British Dictionary definitions for phosphorus pentoxide
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 called: phosphoric anhydride
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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