Peroxyacetyl nitrate
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Names | |
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IUPAC name
nitroethaneperoxoate
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Systematic IUPAC name
ethanoic nitric peroxyanhydride | |
Other names
PAN
peroxyacetyl nitrate α-oxoethylperoxylnitrate | |
Identifiers | |
3D model (JSmol)
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Abbreviations | PAN |
ChemSpider | |
ECHA InfoCard | 100.017.187 |
EC Number |
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PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
C2H3NO5 | |
Molar mass | 121.05 g mol−1 |
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 m3 atm mol−1 at 298 K |
Atmospheric OH rate constant
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10−13 cm3 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).
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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, 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
peroxy acid and nitrate is a toxic chemical