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Comment ClosedEPA· Environmental Protection AgencyProposed RuleEPA-HQ-OPPT-2024-0281

Significant New Uses: Certain Chemical Substances (24-5.5e)

Introduced November 3, 2025Comment period ends December 4, 2025View on regulations.gov ↗

What This Means

The EPA identifies certain chemical substances with significant new uses under TSCA. This regulation restricts how these chemicals may be manufactured or processed without prior EPA notification.

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Details

TypeFederal Regulation
AgencyEPA · Environmental Protection Agency
DocketEPA-HQ-OPPT-2024-0281
Regulations.gov IDEPA-HQ-OPPT-2024-0281-0001
IntroducedNovember 3, 2025
Comment DeadlineDecember 4, 2025