IRIS Toxicological Review of Biphenyl (Interagency Science Consultation Draft)
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Biphenyl is an organic compound that forms colorless crystals. It occurs naturally in coal tar, crude oil, and natural gas. Biphenyl was once used in the production of polychlorinated biphenyls (PCBs) before they were banned in the late 1970s. It is no longer used as an antimicrobial and a fungicide in the U.S., but it is still used as a fungistat in other countries, most commonly in the packaging of citrus fruits. Today, biphenyl is mainly used in the production of pesticides, as a dye carrier in polyester dyeing, and as a component of heat transfer fluids, which are used for industrial processing applications. Biphenyl is found at multiple Superfund sites and other hazardous waste sites. It is on the list of Hazardous Air Pollutants (HAPs) and is classified as one of the High Production Volume (HPV) chemicals.
|Aug 1989||The RfD for 1,1-biphenyl was posted to the IRIS Database.|
|Mar 1991||The cancer assessment for 1,1-biphenyl was posted to the IRIS database.|
|Jul 2011||EPA hosted an interagency science consultation on the review of the draft Toxicological Review of Biphenyl.|
|Sep 2011||EPA released the external review draft of the biphenyl assessment for public review and comment. [Federal Register Notice Sep 30, 2011]|
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