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About Acrylonitrile | The NCI Study | The Oxford IARC Rating Based on the results of the four worldwide studies, the International Agency for Research on Cancer (IARC) has lowered its classification of AN from "probable" to "possible" human carcinogen. IARC, as part of the World Health Organization, coordinates and conducts research on the causes of human cancer. The IARC rating is used in many countries to determine how chemicals should be regulated. The completeness of these studies provides great assurances that current standards are doing their job. Even with the improved IARC rating, industry is committed to maintaining strict workplace emissions levels and safety standards achieved through voluntary efforts by industry and through government regulation. Companies will continue working with government agencies to maintain a high margin of safety for acrylonitrile exposure based on sound scientific data. Environmental While the focus of the four major AN studies is on workers, the conclusions can be interpreted as good news for communities near AN facilities. Residents beyond plant fence lines are exposed to levels of AN many times lower than workers. In some cases, air monitoring at AN plants has detected "zero" exposure to the community up to detectable limits of parts-per-trillion. In addition, AN air emissions have decreased over the years, according to data in the U.S. Environmental Protection Agency's Toxic Release Inventory (TRI). About Acrylonitrile | The NCI Study | The Oxford |
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