Phosphorus Pentoxide (P2O5)-Powder

Characteristic




Phosphorus pentoxide is a chemical compound with molecular formula P4O10 (with its common name derived from its empirical formula, P2O5). This white crystalline solid is the anhydride of phosphoric acid. It is a powerful desiccant and dehydrating agent.




Chemical formula：P4O10

Molar mass：283.9 g mol−1

Appearance：white powder

                     very deliquescent

                     odorless

Density：2.39 g/cm3

Melting point：340 °C (644 °F; 613 K)

Boiling point：360 °C (sublimes)

Solubility in water：exothermic hydrolysis

Vapor pressure：1 mmHg @ 385 °C (stable form)




Application




Used for preparing high purity high phosphoric acid, organic synthesis and gas desiccant, or for preparing polyphosphoric acid.