Data / Federal rules / 2024-30964

Significant New Use Rules on Certain Chemical Substances (19-5.F)

The Environmental Protection Agency published this final rule in the Federal Register on January 6, 2025. It took effect on March 7, 2025.

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What the agency says

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). The SNURs require persons to notify EPA at least 90 days before commencing 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 use, under the conditions of use for that chemical substance, within the applicable review period. Persons may not commence manufacture or processing for the significant new use until they have submitted a Significant New Use Notice (SNUN), and EPA has conducted a review of the notice, made an appropriate determination on the notice, and has taken any risk management actions as are required as a result of that determination.

Key facts

Document number: 2024-30964
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: January 6, 2025
Takes effect: March 7, 2025
Dates: This rule is effective on March 7, 2025. For purposes of judicial review, this rule shall be promulgated at 1 p.m. (EST) on January 21, 2025.
Docket: EPA-HQ-OPPT-2019-0530; FRL-7645-02-OCSPP
Regulation ID (RIN): 2070-AB27
Code of Federal Regulations: 40 CFR 9; 40 CFR 721
Topics: Chemicals; Environmental protection; Hazardous substances; Reporting and recordkeeping requirements
Pages: 7

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on chemicals · Rules on environmental protection · Rules on hazardous substances · Published in January 2025

Read from the Federal Register API, last updated 2026-10-24. 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.