United States Government Publishing Office publisher pbl distributor dst United States National Archives and Records Administration Office of the Federal Register author aut Government Organization text government publication eng FR Regulatory Information 2026_register executive 2026-05-21 article Proposed Rules D09002ee1e1e8bf2e D09002ee1e1e8bfa4 United States Environmental Protection Agency originator org United States Government Agency or Subagency EPA issued significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) on April 24, 2026, for chemical substances subject to an Order issued 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 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. This document extends the comment period, which was scheduled to end on May 26, 2026, for 45 days. 91 FR 29926 https://www.govinfo.gov/app/details/FR-2026-05-21/2026-10161 2026-10161 fr21my26-18 RIN 2070-AB27 6560-50-P EPA-HQ-OPPT-2025-2932 FRL-13085-03-OCSPP https://www.govinfo.gov/app/details/FR-2026-05-21/2026-10161 https://www.govinfo.gov/content/pkg/FR-2026-05-21/html/2026-10161.htm https://www.govinfo.gov/content/pkg/FR-2026-05-21/pdf/2026-10161.pdf 2 p. 29926 29927 91 FR 29926 Title 40 Part 721 40 CFR Part 721 RIN 2070-AB27 Significant New Use Rules on Certain Chemical Substances (26-2); Extension of Comment Period; Federal Register Vol. 91, Issue PRORULE 2026-10161 ENVIRONMENTAL PROTECTION AGENCY 2026-04-24 2026-07-10 EPA-HQ-OPPT-2025-2932 FRL-13085-03-OCSPP 6560-50-P 2026-10161 Proposed rule; extension of comment period.

EPA issued significant new use rules (SNURs) under the Toxic Substances Control Act (TSCA) on April 24, 2026, for chemical substances subject to an Order issued 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 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. This document extends the comment period, which was scheduled to end on May 26, 2026, for 45 days.

The comment period for the document published on April 24, 2026 at 91 FR 22075 (FRL-13085-01-OCSPP) is extended. Comments must be received on or before July 10, 2026. For technical information: James Yan, New Chemicals Division (7405M), Office of Pollution Prevention and Toxics, Environmental Protection Agency, 1200 Pennsylvania Ave. NW, Washington, DC 20460- Significant New Use Rules on Certain Chemical Substances (262); Extension of Comment Period, TSCA-Hotline@epa.gov wysong.william@epa.gov yan.james@epa.gov https://www.epa.gov/dockets https://www.regulations.gov Vol. 91, no. 98 Office of the Federal Register, National Archives and Records Administration 2026-05-21 continuing daily deposited born digital 320 p. Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2026-05-21 P0b002ee1e1e8bb9d 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr21my26 https://www.govinfo.gov/app/details/FR-2026-05-21 https://www.govinfo.gov/content/pkg/FR-2026-05-21/pdf/FR-2026-05-21.pdf https://www.govinfo.gov/content/pkg/FR-2026-05-21/xml/FR-2026-05-21.xml fdlp 29879 30190 DGPO 2026-05-21 2026-05-21 FR-2026-05-21 machine generated eng FR FR-2026-05-21 91 98