USEPAFR-2026-10712NewsIn force

Significant New Use Rules on Certain Chemical Substances (25-2.5e)

EPA issues significant new use rules (SNURs) under TSCA for certain chemical substances previously subject to premanufacture notices and EPA orders. Manufacturers and importers must notify EPA at least 90 days before commencing manufacture or processing for designated significant new uses, and cannot proceed until EPA completes its review and determination.

Last changed 3 months ago.

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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) and are also subject to an Order issued by EPA 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 the significant 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.

Source

https://www.federalregister.gov/documents/2026/05/29/2026-10712/significant-new-use-rules-on-certain-chemical-substances-25-25e

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