40 suspected carcinogenic chemicals are in EPA-registered pesticides
"Approximately 40 chemicals classified by the International Agency for Research on Cancer (IARC) as known, probable, or possible human carcinogens, are used in EPA-registered pesticides now on the market.216–219 Some of these chemicals are used in several different pesticides; for example, chromium trioxide, an IARC Class 1 carcinogen (carcinogenic to humans), is used in 14 different pesticide products from five different companies. Thus, the total number of registered pesticide products containing known or suspected carcinogens is far greater than 40, but few have been severely restricted in the United States. Among those that have been banned, or had their use restricted, are DDT, ethylene oxide, dimethlhydrazine, hexachlorobenzene, and some chlorophenoxy herbicides.215"
President’s Cancer Panel, Reducing Environmental Cancer Risk, What We can Do Now, 2008–2009 Annual Report , U.S. Department of Health and Human Services, National Institutes of Health, National Cancer Institute, 79, http://deainfo.nci.nih.gov/advisory/pcp/annualReports/pcp08-09rpt/PCP_Re...