Phosphorus pentoxide

Phosphorus pentoxide is a chemical compound with molecular formula P₄O₁₀, more often written as P₂O₅.

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

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.