NCIt definition : A synthetic, yellow crystalline solid that is insoluble in water and moderately soluble
in toluene. It is not used for any commercial applications and is used only for research
purposes. When heated to decomposition, 1,8-dinitropyrene emits toxic fumes of nitrogen
oxides. 1,8-dinitropyrene is found in particulate emissions from combustion products,
of which diesel exhaust is the principle source. The primary route of potential human
exposure to this chemical is inhalation. Detectable levels of 1,8-dinitropyrene have
been found in respirable particulates from ambient atmospheric samples. It is reasonably
anticipated to be a human carcinogen. (NCI05);