are near waste sites, underground fuel storage tanks that are leaking, or landfills. As of 2012, according to the EU Dangerous Substances Directive, ethylbenzene is not classified as hazardous to the environment. Ethylbenzene is a constituent of tobacco smoke. Biodegradation Certain strains of the fungus Cladophialophora can grow on ethylbenzene. The bacterium Aromatoleum aromaticum EbN1 was discovered due to its ability to grow on ethylbenzene. References National Toxicology Program. Toxicology and Carcinogenesis Studies of Ethylbenzene (CAS No. 100-41-4) in F344/N Rats and B6C3F1 Mice (Inhalation Studies). TR No. 466. U.S. Department of Health and Human Services, Public Health Service, National Institutes of Health, Bethesda, MD. 1999. External links National Pollutant Inventory - Ethybenzene Fact Sheet NLM Hazardous Substances Databank – Ethylbenzene EPA Chemical database Intox Chemical database Agency for Toxic Substances and Disease Registry CDC - NIOSH Pocket Guide to Chemical Hazards Hazardous air pollutants IARC Group 2B carcinogens Alkylbenzenes C2-Benzenes Commodity chemicals Phenyl compounds