10102-03-1

colorless, hexagonal crystal(s) [MER06]

As nitrating agent in chloroform solution.

Colorless hexagonal crystal; volatile solid; density 1.642 g/cm³ at 18°C; melts at 30°C; decomposes at 47°C; soluble in water forming nitric acid; soluble in chloroform with some decomposition.

ChEBI: Dinitrogen pentaoxide is a nitrogen oxide.

Nitrogen pentoxide is obtained by dehydration of pure nitric acid by phosphorus(V) oxide at low temperatures around -10°C:
2HNO₃ + P₂O₅ → 2HPO₃ + N₂O₅.

Nitrogen pentoxide is toxic by ingestion and can produce mouth burn. Skin contact can cause irritation.