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Final ruleTakes effect Jan. 11, 2027

Modification of Significant New Uses of Certain Chemical Substances (23-1.M)

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Nov. 10, 2026. Document 2026-22888. Updated Nov. 10, 2026.

What it does

EPA is amending significant new use rules (SNURs) issued under section 5(a)(2) of the Toxic Substances Control Act (TSCA) for certain chemical substances identified herein, which were the subject of premanufacture notices (PMNs) and significant new use notices (SNUNs). This action amends the SNURs by allowing certain new uses reported in the SNUNs or PMNs without additional notification requirements, modifying the significant new use notification requirements based on the actions and determinations for the SNUN or PMN submissions or based on the examination of new test data or other information, and making technical amendments to several SNURs. EPA is issuing these amendments based on review of new and existing data for the chemical substances.

The Environmental Protection Agency's summary, as published in the Federal Register.

What changed in the regulation

2 parts of Title 40 of the Code of Federal Regulations:

40 CFR 721, 40 CFR 725

Compared with

The Environmental Protection Agency has published 245 final rules in 2026 so far, compared with 263 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

What happens next and when

This rule is effective on January 11, 2027. For purposes of judicial review, this rule shall be promulgated at 1 p.m. (EST) on November 24, 2026.

The agency's dates, word for word.

Document number2026-22888
ActionFinal rule.
AgenciesEnvironmental Protection Agency
PublishedNov. 10, 2026
Effective dateJan. 11, 2027
Regulation identifier (RIN)2070-AB27
DocketEPA-HQ-OPPT-2022-0863

Source: the Federal Register (public domain). The document in the Federal Register