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Environmental Assessment

EPA Peer Consultation Workshop Report on the Review of the Draft IRIS Toxicological Review of Dibutyl Phthalate (DBP)

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Report Information

The U.S. EPA finalized comments gathered from a public peer review of the scientific basis supporting the human health hazard and dose-response assessment of dibutyl phthalate (DBP) that will appear on the Integrated Risk Information System (IRIS) database. The peer review has ensured that science is used credibly and appropriately in derivation of the dose-response assessments and toxicological characterization.

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Jamie B. Strong
  • by phone at:   703-347-8638
  • by email at:  strong.jamie@epa.gov

Background

Dibutyl phthalate is used as a plasticizer for nitrocellulose, polyvinyl acetate, and polyvinyl chloride; a lubricant for aerosol valves; an antifoaming agent; a skin emollient; and a plasticizer in nail polish, fingernail elongators, and hair spray. Dibutyl phthalate is: 1) classified as a Hazardous Air Pollutant under the 1990 Clean Air Act amendments; 2) included on the Office of Prevention, Pesticides and Toxic Substances 1990 high production volume chemical list; 3) listed as a Toxic Release Inventory chemical; and 4) found at hazardous waste and Superfund sites. The assessment will present reference values for the noncancer effects of dibutyl phthalate (RfD and RfC), where supported by available data, and a cancer assessment. The Toxicological Review will be subject to an internal and external peer review.

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