Significant New Use Rules on Certain Chemical Substances (25-1.5e)

Document 2026-10264 is a Final Rule published by the Environmental Protection Agency in the Federal Register on May 22, 2026, with an effective date of July 21, 2026. EPA is issuing significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) for certain chemical substances that were the subject of premanufacture notices (PMNs) and are also subject to an Order issued by EPA pursuant to TSCA. The SNURs require persons to notify EPA at least 90 days before commencing the manufacture (defined by statute to include import) or processing of any of these chemical substances for an activity that is designated as a significant new use in the SNUR. The required notification initiates EPA's evaluation of the conditions of that use for that chemical substance. In addition, the manufacture or processing for the significant new use may not commence until EPA has conducted a review of the required notification; made an appropriate determination regarding that notification; and taken such actions as required by that determination. View the original at https://www.federalregister.gov/documents/2026/05/22/2026-10264/significant-new-use-rules-on-certain-chemical-substances-25-15e.

No. Document 2026-10264 is not classified as economically significant under Executive Order 12866. Economically significant rules require OIRA review and are estimated to have impacts of $100 million or more per year.