CAS No. 71-43-2

Benzene (C6H6) is a highly flammable, colorless liquid that evaporates quickly into the air. It is harmful to the eyes, skin, airway, nervous system, and lungs. Benzene can cause blood cancers like leukemia.  Workers may be harmed from exposure to benzene. The level of exposure depends upon the dose, duration, and work being done

Benzene is found in products that are made from coal and petroleum. Lubricants, plastics, rubbers, dyes, and other chemicals can be produced with benzene. Some examples of workers at risk of benzene exposure include the following:

  • Factory workers where steel or rubber is made or processed
  • Workers in the printing industry or who work around printing inks
  • Fire fighters who come in contact with toxic smoke
  • Workers in gas stations, shoe making or repair, and who work in laboratories

NIOSH recommends that employers use Hierarchy of Controls to prevent injuries.  If you work in an industry that uses benzene, please read chemical labels and the accompanying Safety Data Sheet for hazard information. Visit NIOSH’s page on Managing Chemical Safety in the Workplace to learn more about controlling chemical workplace exposures.

The following resources provide information about occupational exposure to benzene. Useful search terms for benzene include “benzol” and “phenyl hydride.”

NIOSH Chemical Resources

Related NIOSH Resources

Selected Publications

Related Resources

International Resources