Significant New Use Rules on Certain Chemical Substances (25-3.5e)

Document 2026-11319 is a Proposed Rule published by the Environmental Protection Agency in the Federal Register on June 5, 2026. EPA is proposing 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 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 significant new use by this rulemaking to notify EPA at least 90 days before commencing that activity. 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/2026/06/05/2026-11319/significant-new-use-rules-on-certain-chemical-substances-25-35e.

No. Document 2026-11319 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.