Difference between revisions of "Phosphorus pentoxide"
From Sciencemadness Wiki
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Revision as of 09:23, 11 September 2015
Phosphorus pentoxide is a chemical compound with molecular formula P4O10, more often written as P2O5.
Contents
Properties
Chemical
Phosphorus pentoxide is the anhydride of phosphoric acid. It will react exothermically with water to yield the said acid.
Physical
Phosphorous pentoxide is a white solid, with a pungent odor and strong deliquescent. Its density is 2.30 g/cm3. It boils at 423 °C under atmospheric pressure; if heated more rapidly it can sublimate.
Availability
Phosphorus pentoxide is sold by chemical suppliers.
Preparation
Phosphorus pentoxide can be made by burning elemental phosphorus.
Projects
- Dry solvents, especially the halogenated ones, which cannot be dried with alkali metals
- Make pure phosphoric acid
- Convert primary amides into nitriles
- Make dinitrogen pentoxide
- Make dichlorine heptoxide
Handling
Safety
It is an extremely powerful desiccant, and contact with bare hand must be avoided.
Storage
In closed and sealed bottles, away from any moisture.
