"peroxyacetyl nitrate." YourDictionary, n.d. Web. 21 October 2018. <http://www.yourdictionary.com/peroxyacetyl-nitrate>.
peroxyacetyl nitrate. (n.d.). Retrieved October 21st, 2018, from http://www.yourdictionary.com/peroxyacetyl-nitrate
Abbr. PAN A toxic organic compound, C2H3NO5, formed photochemically in smog, causing eye irritation and damage to vegetation. Due to the stability of this compound, it may be transported in air over long distances before breaking down into smaller reactive compounds.