Peroxynitrate

Peroxynitrate
Identifiers
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:29270;
ChemSpider	4574117;
PubChem CID	5460620;
	InChI InChI=1S/HNO4/c2-1(3)5-4/h4H/p-1 Key: UUZZMWZGAZGXSF-UHFFFAOYSA-M;
	SMILES [N+](=O)([O-])O[O-];
Properties
Chemical formula	NO4−
Molar mass	78.004 g·mol−1
Related compounds
Related compounds	peroxycarbonate; peroxysulfate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Peroxynitrate (or peroxonitrate) refers to salts of the unstable peroxynitric acid, HNO₄. Peroxynitrate is unstable and decomposes to nitrate and dioxygen.

No solid peroxynitrate salts are known. However, there is a report that the Russian chemist Sebastian Moiseevich Tanatar produced sodium peroxynitrate octahydrate (NaNO₃·H₂O₂·8H₂O) by evaporating a solution of sodium nitrate and hydrogen peroxide until crystallisation begins and then mixing with alcohol to form crystals of the octahydrate.

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