[CPEO-MEF] PFAS: U.S. EPA's IRIS Program releases public comment version of its Toxicological Review of Perfluorobutanoic Acid (PFBA) and Related Compound Ammonium Perfluorobutanoic Acid

[Lenny Siegel <LSiegel@cpeo.org>]

The IRIS Toxicological Review of Perfluorobutanoic Acid (PFBA) and Related Compound Ammonium Perfluorobutanoic Acid was released for public comment and external peer review in August 2021. The IRIS (U.S. EPA’s Integrated Risk Information System) assessment of PFBA will undergo an independent external scientific peer review managed by Eastern Research Group, Inc. (ERG), a contractor to EPA. Additional information about the peer review will be posted on the IRIS website. Additionally, the same peer review panel will conduct all five (5) PFAS IRIS assessments.

Background

Perfluorobutanoic Acid (PFBA, CASRN 375-224) and its related salt (ammonium perfluorobutanoic acid [NH4+PFBA], CASRN 10495-86-0) are members of the group of per and polyfluoroalkyl substances (PFAS). Concerns about PFBA and other PFAS stem from the resistance of these compounds to hydrolysis, photolysis, and biodegradation, which leads to their persistence in the environment. PFAS are not naturally occurring in the environment; they are man-made compounds that have been used widely over the past several decades in consumer products and industrial applications because of their resistance to heat, oil, stains, grease, and water.

PFBA is a breakdown product of other PFAS that are used in stain-resistant fabrics, paper food packaging, and carpets; it is also used for manufacturing photographic film, and it is used as a substitute for longer chain perfluoroalkyl carboxylic acids (PFCAs) in consumer products. PFBA has been found to accumulate in agricultural crops and has been detected in household dust, soils, food products, and surface, ground, and drinking water.

As such, exposure is possible via inhalation of indoor or outdoor air, ingestion of drinking water and food, and dermal contact with PFBA-containing products.

See https://cfpub.epa.gov/ncea/iris_drafts/recordisplay.cfm?deid=350051 

—

Lenny Siegel
Executive Director
Center for Public Environmental Oversight
A project of the Pacific Studies Center
LSiegel@cpeo.org
P.O. Box 998, Mountain View, CA 94042
Voice/Fax: 650-961-8918
http://www.cpeo.org

Author: DISTURBING THE WAR: The Inside Story of the Movement to Get Stanford University out of Southeast Asia - 1965–1975 (See http://a3mreunion.org)

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