All Knowledge & Insights By Date

On July 9, 2025, the U.S. Environmental Protection Agency (EPA) withdrew proposed significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for 18 chemical substances that were the subject of premanufacture notices (PMN) and a subsequent TSCA Order. 90 Fed. Reg. 30216. EPA states that it is withdrawing the proposed SNURs because it withdrew the 2022 TSCA Order that was the basis of the rules on December 18, 2024. As reported in our April 17, 2023, blog item, in April 2023,...

The Organisation for Economic Co-operation and Development (OECD) has published the Developments in Delegations on the Safety of Manufactured Nanomaterials and Advanced Materials between July 2023 and June 2024 -- Tour de Table (Tour de Table). The Tour de Table lists U.S. developments on the human health and environmental safety of nanomaterials. Risk assessment decisions, including the type of nanomaterials assessed, testing recommended, and outcomes of the assessment include: The U.S....

On December 12, 2024, the U.S. Environmental Protection Agency (EPA) issued several final significant new use rules (SNUR) for certain chemical substances that were the subject of premanufacture notices (PMN) and are also subject to an Order issued by EPA pursuant to the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 100361. Two of the SNURs are for substances identified generically as multi-walled carbon nanotubes (PMN P-21-216 and PMN P-21-217). The SNURs require persons who intend to...

On November 29, 2024, the U.S. Environment Protection Agency (EPA) issued a supplemental notice of proposed rulemaking (SNPRM) that would update the December 2, 2022, proposed significant new use rules (SNUR) for 17 per- and polyfluoroalkyl substances (PFAS) that were the subject of premanufacture notices (PMN) and are also subject to an Order issued by EPA pursuant to the Toxic Substances Control Act (TSCA). 89 Fed. Reg. 94642. The SNURs would require persons who intend to manufacture (defined...

On November 14, 2024, the U.S. Environmental Protection Agency (EPA) announced the release of its third annual progress report, “highlighting the significant achievements the agency has made under its PFAS Strategic Roadmap and the Biden-Harris Administration’s whole-of-government strategy to protect communities from the impacts of forever chemicals.” According to EPA’s press release, progress on per- and polyfluoroalkyl substances (PFAS) during the Biden-Harris Administration includes:...

On August 20, 2024, the U.S. Environmental Protection Agency (EPA) proposed significant new use rules (SNUR) ) under the Toxic Substances Control Act (TSCA) for chemical substances, including graphene nanoplatelets (generic), that were the subject of premanufacture notices (PMN) and a Microbial Commercial Activity Notice (MCAN) and are also subject to a TSCA Order. 89 Fed. Reg. 67368. The SNURs would require persons who intend to manufacture (defined by statute to include import) or process any...

On June 11, 2024, the U.S. Environmental Protection Agency (EPA) published proposed significant new use rules (SNUR) for certain chemical substances that were the subject of premanufacture notices (PMN) and are also subject to a TSCA Order, including multi-walled carbon nanotubes (generic) (P-21-216 and P-21-217). 89 Fed. Reg. 49121. The SNURs would require persons who intend to manufacture (including import) or process any of these chemical substances for an activity that is proposed as a...

The Organization for Economic Cooperation and Development (OECD) has published the latest edition of the Developments in Delegations on the Safety of Manufactured Nanomaterials and Advanced Materials -- Tour de Table. The Tour de Table compiles information provided by delegations on the occasion of the 23rd meeting of the OECD Working Party on Manufactured Nanomaterials (WPMN) in June 2023. The Tour de Table lists U.S. developments on the human health and environmental safety of nanomaterials....

On January 11, 2024, the U.S. Environmental Protection Agency (EPA) issued a final significant new use rule (SNUR) to prevent companies from starting or resuming the manufacture (including import) or processing of 329 per- and polyfluoroalkyl substances (PFAS) that are designated as inactive on the Toxic Substances Control Act (TSCA) Chemical Substance Inventory. 89 Fed. Reg. 1822. The final rule notes that persons subject to the final SNUR are required to notify EPA at least 90 days before...

On December 18, 2023, the U.S. Environmental Protection Agency (EPA) issued final significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for a number of chemical substances that were the subject of premanufacture notices (PMN) and are also subject to Orders issued by EPA pursuant to TSCA. 88 Fed. Reg. 87346. The SNURs include four chemical substances identified as: Multi-walled carbon nanotubes (MWCNT); closed; 4.4-12.8 nanometer (nm) diameter; bundle length 10.6-211.1...

The U.S. Environmental Protection Agency (EPA) announced on August 16, 2023, the availability of the latest Toxic Substances Control Act (TSCA) Chemical Substance Inventory. EPA notes that this update to the public TSCA Inventory is part of its biannual posting of non-confidential Inventory data. According to EPA, the Inventory contains 86,718 chemicals, of which 42,242 are active in U.S commerce. Other updates to the TSCA Inventory include updates to commercial activity data, unique...

The U.S. Environmental Protection Agency’s (EPA) spring 2023 Unified Agenda, published on June 13, 2023, includes the following rulemakings under the Toxic Substances Control Act (TSCA) or the Toxics Release Inventory (TRI). Proposed Rule Stage Tiered Data Reporting to Inform Prioritization, Risk Evaluation and Risk Management under TSCA (RIN: 2070-AK62): EPA is developing a rulemaking under TSCA Sections 8(a) and (d) to establish reporting requirements based upon a chemical’s status in...

On July 25, 2023, 12 members of the House sent a letter to U.S. Environmental Protection Agency (EPA) Administrator Michael Regan urging EPA “to conduct a rigorous, comprehensive, and transparent assessment of the risks of [per- and polyfluoroalkyl substances (PFAS)] in fluorinated containers.” The letter states that EPA is mandated by the Toxic Substances Control Act (TSCA) to address the risks of new PFAS and significant new uses of existing PFAS. According to the letter, the...

The U.S. Environmental Protection Agency (EPA) announced on July 19, 2023, that it is extending the public comment period for its proposed significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) to ensure chemicals made from plastic waste-derived feedstocks are free from certain contaminants before they can be used to make transportation fuels. The SNURs would require companies to notify EPA before manufacturing or processing 18 chemicals made from plastic waste-derived...

The U.S. Environmental Protection Agency (EPA) announced on June 15, 2023, that it will issue proposed significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for 18 chemicals made from plastic waste-derived feedstocks. According to EPA, the proposed SNURs would require notification to and review by EPA before these fuels could be made using plastic waste-derived feedstocks that contain impurities like per- and polyfluoroalkyl substances (PFAS), heavy metals, dioxins,...

The Organization for Economic Cooperation and Development (OECD) has published the latest edition of the Developments in Delegations on the Safety of Manufactured Nanomaterials and Advanced Materials — Tour de Table. The Tour de Table compiles information provided by delegations on the occasion of the 22nd meeting of the OECD Working Party on Manufactured Nanomaterials (WPMN) in June 2022.  The Tour de Table lists U.S. developments on the human health and...

On April 6, 2023, the U.S. District Court for the District of Columbia dismissed a suit brought by the Center for Environmental Health (CEH) and Public Employees for Environmental Responsibility (PEER) to prevent Inhance Technologies USA (Inhance) from generating per- and polyfluoroalkyl substances (PFAS) when fluorinating plastic containers. As reported in our January 6, 2023, blog item, CEH and PEER sought a court order restraining Inhance from continued manufacture of PFAS in violation of a...

On December 27, 2022, the Center for Environmental Health (CEH) and Public Employees for Environmental Responsibility (PEER) filed a lawsuit in the U.S. District Court for the District of Columbia to prevent Inhance Technologies USA from generating per- and polyfluoroalkyl substances (PFAS) when fluorinating plastic containers. According to CEH and PEER’s joint press release, testing conducted by the U.S. Environmental Protection Agency (EPA), Notre Dame researchers, and other...

On December 2, 2022, the U.S. Environmental Protection Agency (EPA) proposed significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for chemical substances that were the subject of premanufacture notices (PMN) and are also subject to Orders issued by EPA pursuant to TSCA. 87 Fed. Reg. 74072. The SNURs require persons who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that is proposed as a...

On October 31, 2022, the U.S. Environmental Protection Agency (EPA) proposed significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for a number of chemical substances that were the subject of premanufacture notices (PMN) and are also subject to Orders issued by EPA pursuant to TSCA. 87 Fed. Reg. 65548. The proposed SNURs include four chemical substances identified as: Multi-walled carbon nanotubes (MWCNT); closed; 4.4-12.8 nanometer (nm) diameter; bundle length...

On September 29, 2022, the U.S. Environmental Protection Agency (EPA) issued final significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for certain chemical substances that were the subject of premanufacture notices (PMN), including multi-walled carbon nanotubes (MWCNT) (generic). 87 Fed. Reg. 58999. The SNUR requires persons who intend to manufacture (defined by statute to include import) or process the chemical substance identified generically as MWCNTs (PMN...

On July 7, 2022, the U.S. Environmental Protection Agency (EPA) Office of Inspector General (OIG) released a report entitled “The EPA Was Not Transparent About Changes Made to a Long-Chain PFAS Rule After Administrator Signature.” OIG evaluated the extent to which EPA followed applicable policies, procedures, and guidance for the changes made to the long-chain perfluoroalkyl carboxylate and perfluoroalkyl sulfonate chemical substances (LCPFAC) significant new use rule (SNUR) between the EPA...

The U.S. Environmental Protection Agency (EPA) announced on March 4, 2022, the availability of the latest Toxic Substances Control Act (TSCA) Inventory. EPA states that the biannual update to the public TSCA Inventory is part of its regular posting of non-confidential TSCA Inventory data. EPA plans the next regular update of the Inventory for summer 2022. According to EPA, the Inventory contains 86,631 chemicals, of which 42,039 are active in U.S commerce. Other updates include new chemical...

The Organization for Economic Cooperation and Development (OECD) has published the latest edition of the Developments in Delegations on the Safety of Manufactured Nanomaterials — Tour de Table. The Tour de Table compiles information provided by delegations on developments concerning the safety of manufactured nanomaterials. It includes the following information on developments in the United States. The U.S. Environmental Protection Agency (EPA) completed review of two low volume...

According to an October 25, 2021, project notification memorandum, the U.S. Environmental Protection Agency (EPA) Office of Inspector General (OIG) plans to begin an evaluation to determine the extent to which EPA followed applicable policies, procedures, and guidance for the changes made to the significant new use rule (SNUR) for long-chain perfluoroalkyl carboxylate (LCPFAC) and perfluoroalkyl sulfonate chemical substances between the EPA Administrator’s signing of the final rule on June...

 The U.S. Environmental Protection Agency (EPA) announced on August 31, 2021, the availability of the latest Toxic Substances Control Act (TSCA) Inventory. EPA states that the biannual update to the public TSCA Inventory is part of its regular posting of non-confidential TSCA Inventory data. EPA plans the next regular update of the Inventory for winter 2022. According to EPA, the Inventory contains 86,607 chemicals of which 41,953 are active in U.S commerce. Other updates to the TSCA...

On August 18, 2021, the U.S. Environmental Protection Agency (EPA) issued several significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for chemical substances that were the subject of premanufacture notices (PMN), including the chemical substance identified generically as multiwalled carbon nanotubes (PMN P-18-182). 86 Fed. Reg. 46133. The SNUR requires persons who intend to manufacture (defined by statute to include import) or process multiwalled carbon nanotubes...

The U.S. Environmental Protection Agency (EPA) announced on June 10, 2021, three actions intended to protect communities from per- and polyfluoroalkyl substances (PFAS). The actions include proposing a rule designed to obtain comprehensive data on more than 1,000 PFAS manufactured in the United States, withdrawing guidance that EPA believes weakened its July 2020 significant new use rule (SNUR) restricting certain long-chain PFAS, and publishing a final rule that incorporates three...

On May 21, 2021, the U.S. Environmental Protection Agency (EPA) published its response to a portion of the petition it received February 8, 2021, from People for Protecting Peace River, Center for Biological Diversity, and 16 other organizations. 86 Fed. Reg. 27546. While the petition requested three actions related to the Toxic Substances Control Act (TSCA), EPA states that it has determined that only one of those actions is an appropriate request: a request to issue a test rule under TSCA...

The U.S. Environmental Protection Agency (EPA) announced on March 29, 2021, that it is evaluating its policies, guidance, templates, and regulations under the Toxic Substances Control Act (TSCA) new chemicals program to ensure they “adhere to statutory requirements,” the Biden-Harris Administration’s executive orders, and other directives.  EPA identified several instances where its approach for making determinations and managing risks associated with new chemicals can,...

The Organization for Economic Cooperation and Development (OECD) has published the latest edition of the Developments in Delegations on the Safety of Manufactured Nanomaterials — Tour de Table.  The Tour de Table compiles information provided by delegations on the occasion of the 20th meeting of the OECD Working Party on Manufactured Nanomaterials (WPMN) in September 2020.  Below are highlights from the Tour de Table: Canada: Canada is developing a nanomaterial...

The U.S. Environmental Protection Agency (EPA) announced on February 3, 2021, the latest update to the Toxic Substances Control Act (TSCA) Inventory, “a list of all existing chemical substances manufactured, processed, or imported” in the United States.  EPA states that this biannual update to the public TSCA Inventory is part of its regular posting of non-confidential TSCA Inventory data.  EPA plans to release the next regular update of the Inventory in summer 2021.  According to EPA,...

On January 19, 2021, the U.S. Environmental Protection Agency (EPA) announced the availability of a final compliance guide that outlines which imported articles are covered by EPA’s July 2020 final significant new use rule (SNUR) that prohibits companies from manufacturing, importing, processing, or using certain long-chain per- and polyfluoroalkyl substances (PFAS) without prior EPA review and approval.  The final guide is “the official compliance guide for imported...

On December 16, 2020, the U.S. Environmental Protection Agency (EPA) announced the availability of a draft compliance guide that outlines which imported articles are covered by EPA’s July 2020 final significant new use rule (SNUR) that prohibits companies from manufacturing, importing, processing, or using certain long-chain per- and polyfluoroalkyl substances (PFAS) without prior EPA review and approval.  85 FR 81466.  The draft guide will be “the official compliance guide for...

On September 17, 2020, the U.S. Environmental Protection Agency (EPA) published final significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for chemical substances that were the subject of premanufacture notices (PMN) and are subject to Orders issued by EPA pursuant to TSCA.  85 Fed. Reg. 57968.  The SNURs require persons who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that...

On July 27, 2020, the U.S. Environmental Protection Agency (EPA) promulgated a final significant use rule (SNUR) for long-chain perfluoroalkyl carboxylate (LCPFAC) and perfluoroalkyl sulfonate chemical substances.  85 Fed. Reg. 45109.  The final SNUR requires persons to notify EPA at least 90 days before commencing the manufacture (including import) or processing of these chemical substances for the significant new uses described in the notice.  The required significant new use notification...

On June 3, 2020, the U.S. Environmental Protection Agency (EPA) submitted to the Office of Management and Budget (OMB) a final significant new use rule (SNUR) on long-chain perfluoroalkyl carboxylate (LCPFAC) and perfluoroalkyl sulfonate (PFAS) chemical substances.  On March 3, 2020, EPA published a proposed supplemental SNUR for LCPFAC chemical substances that would make inapplicable the exemption for persons who import a subset of LCPFAC chemical substances as part of surface...

On May 4, 2020, the U.S. Environmental Protection Agency (EPA) published proposed significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for chemical substances that were the subject of premanufacture notices (PMN) and are subject to orders issued by EPA pursuant to TSCA.  85 Fed. Reg. 26419.  The SNURs require persons who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that is...

The U.S. Environmental Protection Agency published a proposed rule on April 1, 2020, that would amend the significant new use rules (SNUR) for certain chemical substances that were the subject of a premanufacture notice (PMN) and a significant new use notice (SNUN), including functionalized multi-walled carbon nanotubes (MWCNT) (generic).  85 Fed. Reg. 18173.  This action would amend the SNURs to allow certain new uses reported in the SNUNs without additional notification...

On March 3, 2020, the U.S. Environmental Protection Agency (EPA) published in the Federal Register a proposed supplemental significant new use rule (SNUR) issued under Section 5(a)(2) of the Toxic Substances Control Act (TSCA) for long-chain perfluoroalkyl carboxylate (LCPFAC) chemical substances to make inapplicable the exemption for persons who import a subset of LCPFAC chemical substances as part of surface coatings on articles.  85 Fed. Reg. 12479.  Under the...

The U.S. Environmental Protection Agency (EPA) released on February 20, 2020, a proposed supplemental significant new use rule (SNUR) issued under Section 5(a)(2) of the Toxic Substances Control Act (TSCA) for long-chain perfluoroalkyl carboxylate (LCPFAC) chemical substances to make inapplicable the exemption for persons who import a subset of LCPFAC chemical substances as part of surface coatings on articles.  Under the proposed supplemental SNUR, this subset of LCPFAC chemical substances...

As reported in our October 1, 2019, blog item, on September 25, 2019, the U.S. Environmental Protection Agency (EPA) submitted a proposed significant new use rule (SNUR) on long-chain perfluoroalkyl carboxylate (LCPFAC) and perfluoroalkyl sulfonate (PFAS) chemical substances to the Office of Management and Budget (OMB) for review.  According to OMB’s website, OMB completed its review on February 14, 2020.  EPA has not yet publicly released the proposed rule. According...

The U.S. Environmental Protection Agency (EPA) issued final significant new use rules (SNUR) on November 25, 2019, for 22 chemical substances, including carbon nanomaterial (generic) (PMN P-10-366), that are the subject of premanufacture notices (PMN).  84 Fed. Reg. 64754.  Persons who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that is designated as a significant new use by the SNURs to notify EPA...

On November 13, 2019, Bergeson & Campbell, P.C. (B&C®), presented “Value Chain Communications Required under TSCA Consent Orders and SNURs:  How to Formulate Them and Optimize Their Value,” a complimentary webinar for our clients and friends.  Richard E. Engler, Ph.D., Director of Chemistry, B&C, outlined the categories of legally required risk communications to value chain participants required under TSCA Consent Orders and significant new use rules...

On October 11, 2019, the U.S. Environmental Protection Agency (EPA) published proposed significant new use rules (SNUR) for 31 chemical substances, including multiwalled carbon nanotubes (generic), that were the subject of premanufacture notices (PMN).  84 Fed. Reg. 54816.  EPA notes that eight of the chemical substances are subject to orders under the Toxic Substances Control Act (TSCA) issued by EPA.  The effective date of the TSCA Section 5(e) order for multiwalled...

On August 20, 2019, the U.S. Environmental Protection Agency (EPA) published in the Federal Register final significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for 145 chemical substances that are the subject of premanufacture notices (PMN).  84 Fed. Reg. 43266.  According to EPA, the chemical substances are subject to orders issued by EPA pursuant to TSCA Section 5(e).  The final SNURs require persons who intend to manufacture (defined by...

Section 5(g) of the Toxic Substances Control Act (TSCA) requires the U.S. Environmental Protection Agency (EPA) to publish a statement of its findings after its review of TSCA Section 5(a) notices when EPA makes a finding that a new chemical substance or significant new use is not likely to present an unreasonable risk of injury to health or the environment.  On August 12, 2019, EPA published a statement of its findings for June 2019.  84 Fed. Reg. 39828.  EPA notes that such statements apply...

On April 5, 2019, the U.S. Environmental Protection Agency (EPA) issued a final rule that will establish final significant new use rules (SNUR) under the Toxic Substances Control Act (TSCA) for 13 chemical substances that are the subject of premanufacture notices (PMN).  84 Fed. Reg. 13531. The final rule is significant because the 13 chemical substances are not also subject to consent orders.  During the review, EPA identified certain reasonably foreseen conditions of use that it designated...

The U.S. Environmental Protection Agency (EPA) published a Federal Register notice on December 7, 2018, withdrawing significant new use rules (SNUR) promulgated under the Toxic Substances Control Act (TSCA) for 28 chemical substances, including single-walled carbon nanotubes, that were the subject of premanufacture notices (PMN).  As reported in our October 10, 2018, blog item, EPA issued the SNURs through a direct final rule on October 10, 2018.  EPA states that it...

The U.S. Environmental Protection Agency (EPA) is scheduled to publish a Federal Register notice on December 4, 2018, withdrawing significant new use rules (SNUR) promulgated under the Toxic Substances Control Act (TSCA) for 26 chemical substances, including carbon nanomaterial (generic), that were the subject of premanufacture notices (PMN).  As reported in our October 2, 2018, blog item, EPA issued the SNURs through a direct final rule on October 3, 2018.  EPA states that it received...