Data / Federal rules / 2026-10161

Significant New Use Rules on Certain Chemical Substances (26-2); Extension of Comment Period

The Environmental Protection Agency published this proposed rule in the Federal Register on May 21, 2026. It took effect on April 24, 2026. Comments closed on July 10, 2026.

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What the agency says

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.

Key facts

Document number: 2026-10161
Type: Proposed rule
Action: Proposed rule; extension of comment period
Agency: Environmental Protection Agency
Published: May 21, 2026
Takes effect: April 24, 2026
Comments due: July 10, 2026
Dates: 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.
Docket: EPA-HQ-OPPT-2025-2932; FRL-13085-03-OCSPP
Regulation ID (RIN): 2070-AB27
Code of Federal Regulations: 40 CFR 721
Pages: 2

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Published in May 2026

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.