Peroxyacetyl nitrate

Peroxyacetyl nitrate is a peroxyacyl nitrate. It is a secondary pollutant present in photochemical smog. It is thermally unstable and decomposes into peroxyethanoyl radicals and nitrogen dioxide gas. It is a lachrymatory substance.

Peroxyacetyl nitrate

Names
IUPAC name nitroethaneperoxoate
Systematic IUPAC name ethanoic nitric peroxyanhydride
Other names PAN peroxyacetyl nitrate α-oxoethylperoxylnitrate
Identifiers
CAS Number	2278-22-0^Y
3D model (JSmol)	Interactive image
Abbreviations	PAN
ChemSpider	15907^N
ECHA InfoCard	100.017.187
EC Number	218-905-6
PubChem CID	16782
UNII	SQ8V0P4N89^Y
CompTox Dashboard (EPA)	DTXSID4062301
InChI InChI=1S/C2H3NO5/c1-2(4)7-8-3(5)6/h1H3^N Key: VGQXTTSVLMQFHM-UHFFFAOYSA-N^N InChI=1/C2H3NO5/c1-2(4)7-8-3(5)6/h1H3 Key: VGQXTTSVLMQFHM-UHFFFAOYAL
SMILES CC(OO[N+]([O-])=O)=O
Properties
Chemical formula	C2H3NO5
Molar mass	121.05 g mol^−1
Solubility in water	1.46 × 10 ^5 mg l^−1 at 298 K
log P	−0.19
Vapor pressure	29.2 mmHg at 298 K
Henry's law constant (kH)	0.000278 m^3 atm mol^−1 at 298 K
Atmospheric OH rate constant	10^−13 cm^3 molecule^−1 s^−1 at 298 K
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is ^YN ?)
Infobox references

Peroxyacetyl nitrate, or PAN, is an oxidant that is more stable than ozone. Hence, it is more capable of long-range transport than ozone. It serves as a carrier for oxides of nitrogen (NOx) into rural regions and causes ozone formation in the global troposphere.

External links

• NIST WebBook page for peroxyacetyl nitrate

peroxy acid and nitrate is a toxic chemical