Linda Birnbaum, director of the National Institute of Environmental Health Sciences and the National Toxicology Program said, “Identifying substances in our environment that can make people vulnerable to cancer will help in prevention efforts. This report provides a valuable resource for health regulatory and research agencies, and it empowers the public with information people can use to reduce exposure to cancer-causing substances.”
The substances which have been designated as carcinogens are – ortho-toluidine, 1-bromopropane, cumene and pentachlorophenol. Ortho-toluidine has been directly indicted as cancer causing substance. The other three chemicals have been deemed as possible carcinogens.