Nitrogen pentoxide
- CAS NO.：10102-03-1
- Empirical Formula: N2O5
- Molecular Weight: 108.01
- MDL number: MFCD01940784
- EINECS: 233-264-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-10 10:27:10
What is Nitrogen pentoxide?
Chemical properties
colorless, hexagonal crystal(s) [MER06]
Physical properties
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.
The Uses of Nitrogen pentoxide
As nitrating agent in chloroform solution.
Preparation
Nitrogen pentoxide is obtained by dehydration of pure nitric acid by phosphorus(V) oxide at low temperatures around -10°C:
2HNO3 + P2O5 → 2HPO3 + N2O5.
Definition
ChEBI: Dinitrogen pentaoxide is a nitrogen oxide.
Hazard
Nitrogen pentoxide is toxic by ingestion and can produce mouth burn. Skin contact can cause irritation.
Properties of Nitrogen pentoxide
| Melting point: | 30° |
| Boiling point: | bp760 47.0°; bp100 7.0°; bp10 -20° |
| Density | d15 2.05 |
| solubility | soluble in chloroform; slightly soluble in ctc |
| form | colorless hexagonal crystals |
| color | colorless hexagonal, hexane crystals, crystalline |
| Water Solubility | very soluble chloroform without appreciable decomposition; less soluble CCl4 [MER06] |
Safety information for Nitrogen pentoxide
Computed Descriptors for Nitrogen pentoxide
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