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On Nov. 13, 2025, the U.S. Environmental Protection Agency (EPA) proposed revisions (90 Fed. Reg. 50923) to the Toxic Substances Control Act (TSCA) Section 8(a)(7) regulation for reporting and recordkeeping requirements for perfluoroalkyl and polyfluoroalkyl substances (PFAS). This column summarizes the proposal and the reasons for it....

On December 3, 2025, the U.S. Environmental Protection Agency (EPA) announced the availability of and solicited public comment on an Updated Draft Risk Calculation Memorandum (Draft Memorandum) to inform a revised draft risk evaluation for formaldehyde under the Toxic Substances Control Act (TSCA). 90 Fed. Reg. 55726. EPA states that after further consideration of comments raised during the scientific peer review process, it is reconsidering the use of certain hazard values in the formaldehyde...

On November 24, 2025, the U.S. Environmental Protection Agency (EPA) released the key default values that it uses in its risk assessments of new chemicals under the Toxic Substances Control Act (TSCA). EPA is making the assumptions available on its website in the New Chemicals Division Reference Library. EPA states that it expects the publication of the default values “to improve efficiency, reducing the likelihood that submissions need to be reworked or resubmitted.” According to EPA,...

On November 19, 2025, the U.S. Environmental Protection Agency (EPA) announced the availability of and requested comment on a draft risk evaluation under the Toxic Substances Control Act (TSCA) for 1,2-dichloroethane (Chemical Abstracts Service Registry Number® (CAS RN®) 107-06-2, also known as ethylene dichloride or EDC). 90 Fed. Reg. 52054. EPA notes that the purpose of risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health...

On November 13, 2025, the U.S. Environmental Protection Agency (EPA) issued a proposed rule to amend the Toxic Substances Control Act (TSCA) Section 8(a)(7) regulation for reporting and recordkeeping requirements for perfluoroalkyl and polyfluoroalkyl substances (PFAS). 90 Fed. Reg. 50923. As reported in our October 3, 2023, memorandum, the final rule requires manufacturers (including importers) of PFAS and PFAS-containing articles in any year since 2011 through 2022 to report information...

On October 23, 2025, the Senate Environment and Public Works Subcommittee on Chemical Safety, Waste Management, Environmental Justice, and Regulatory Oversight held a hearing on “Examining the Beneficial Use and Regulation of Chemicals.” The Subcommittee heard from the following witnesses: Peter Huntsman, President and Chief Executive Officer (CEO), Huntsman Corporation (written testimony); Dr. Gwen Gross, Senior Technical Fellow, The Boeing Company (written testimony); and Dr. Tracey...

On Sept. 23, 2025, the U.S. Environmental Protection Agency (EPA) proposed highly anticipated amendments to the procedural framework rule for conducting existing chemical risk evaluations under the Toxic Substances Control Act (TSCA). When conducting a TSCA existing chemical risk evaluation, EPA must determine whether a chemical substance presents an unreasonable risk of injury to health or the environment, without considering costs or non-risk factors under the conditions of use (COU). As...

On September 23, 2025, the U.S. Environmental Protection Agency (EPA) proposed highly anticipated amendments to the procedural framework rule for conducting existing chemical risk evaluations under the Toxic Substances Control Act (TSCA). 90 Fed. Reg. 45690. When conducting an existing chemical risk evaluation under TSCA, EPA must determine whether a chemical substance presents an unreasonable risk of injury to health or the environment, without considering costs or nonrisk factors, including...

Some truths transcend politics, one being that chemical data holds enduring value and is becoming increasingly essential. In the United States, regardless of which party federally controls the levers of power, it’s clear that chemical manufacturers and their customers must develop and curate robust data portfolios for their chemical inventories. The commercial imperatives driving this are undeniable and gaining traction....