NTP Review of Polycyclic Aromatic Hydrocarbons (PAHs)

Polycyclic aromatic hydrocarbons

Substance Overview

PAHs are defined as compounds containing at least two adjacent 6 carbon rings and only carbon and hydrogen.

Status: Cancer: Cancer hazard evaluation for potential listing in the Report on Carcinogens (RoC)

Primary Uses or Exposures

  • PAHs are widespread in the environment.
  • PAHs are common byproducts of combustion of organic substances. PAHs also are found in coal tar, coke, asphalt, and coal.
  • People are typically exposed to a mixture of PAHs, rather than an individual PAH.
  • People in the US are mainly exposed to PAHs via inhalation of smokes (tobacco, wood, coal, etc.) and other air pollutants, and ingestion food containing PAHs (e.g., grilled meat).  Workers at workplaces which use or producing petroleum or coal, or burn organic material, and other facilities might be exposed to PAHs.



Documents for PAHs
Date Document
Sep 20, 2013 Federal Register notice requesting public comment on nominated substances

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