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Phosphorus trioxide Structure

Phosphorus trioxide

Chemical Properties

Melting point 23.8°
Boiling point bp 173.1° in nitrogen atm
Density  d421 2.135
solubility  reacts with H2O
form  colorless monoclinic crystals or liquid
color  colorless monoclinic crystals, crystalline or liquid
Water Solubility  slowly forms H3PO3 in cold H2O; reacts violently in hot H2O forming red P, PH3, and H3PO4 [MER06]
EPA Substance Registry System Phosphorus trioxide (1314-24-5)

Safety Information

RIDADR  2578
HazardClass  8
PackingGroup  III

Usage And Synthesis

Preparation Products And Raw materials

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