Phosphorus pentoxide

July 16th, 2008 by

Phosphorus pentoxide

Other names
Phosphorus(V) oxide
Phosphoric anhydride
Identifiers
CAS number
(P2O5)
(P4O10)
Properties
Molecular formula
O10P4
Molar mass
283.889 g mol−1
Appearance
white powder
very deliquescent
pungent odour
Density
2.39 g cm−3, solid
Melting point
569 °C
Boiling point
sublimes at 360 °C
Solubility in water
exothermic hydrolysis
Vapor pressure
1 mmHg @ 384 °C
Hazards
EU classification
not listed
NFPA 704

1
3
3
W
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references
Phosphorus pentoxide is a chemical [...]

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