Peroxynitric acid

Names

Preferred IUPAC name

Hydroxy nitrate

Systematic IUPAC name

Hydroxy nitrate^[1]^[2]^[3]

Identifiers

CAS Number

26404-66-0^N

3D model (JSmol)

Interactive image

ChemSpider

58833^Y

PubChem CID

65357

CompTox Dashboard (EPA)

DTXSID201030501

InChI

Key: UUZZMWZGAZGXSF-UHFFFAOYSA-N^Y[Pubchem]

SMILES

[N+](=O)([O-])OO

Properties

Chemical formula

HNO₄

Molar mass

79.01224 g/mol

Conjugate base

Peroxynitrate

Related compounds

Peroxynitrous acid
Peroxynitrate

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

Chemical compound

Peroxynitric acid or peroxonitric acid is a chemical compound with the formula HNO
₄. It is an oxyacid of nitrogen, after peroxynitrous acid.

Preparation

Peroxynitrate, the conjugate base of peroxynitric acid, is formed rapidly during decomposition of peroxynitrite in neutral conditions.^[4]

Atmospheric chemistry

Peroxynitric acid is formed in the atmosphere, although it is unstable, it is important as a reservoir for NO₂ through the reversible radical reaction:^[5]

HO
₂NO
₂ ⇌ HO^•
₂ + NO^•
₂

References

^ "Peroxynitric Acid - Compound Summary".
^ "peroxynitric acid". PubChem. Retrieved 9 December 2012.
^ "125239-87-4". ChemIndex. Retrieved 9 December 2012.
^ Miyamoto, S; Ronsein, GE; Corrêa, TC; Martinez, GR; Medeiros, MH; Di Mascio, P (2009). "Direct evidence of singlet molecular oxygen generation from peroxynitrate, a decomposition product of peroxynitrite". Dalton Trans (29): 5720–9. doi:10.1039/b905560f. PMID 20449086.
^ Finlayson-Pitts, Barbara J.; Pitts, James N. (2000), Chemistry of the Upper and Lower Atmosphere, Elsevier, p. 100, doi:10.1016/b978-012257060-5/50000-9, ISBN 978-0-12-257060-5, retrieved 2020-09-24