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Proposed Rule

Significant New Use Rules on Certain Chemical Substances (25-1.5e)

Proposed rule.

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Summary:

EPA is proposing 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 who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that is proposed as a significant new use by this rulemaking to notify EPA at least 90 days before commencing that activity. 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.

Key Dates
Citation: 90 FR 49016
Comments must be received on or before December 3, 2025.
Comments closed: December 3, 2025
Public Participation
3 comments 59 supporting docs
View on Regulations.gov β†’
Topics:
Chemicals Environmental protection Hazardous substances Reporting and recordkeeping requirements

Document Details

Document Number2025-19755
FR Citation90 FR 49016
TypeProposed Rule
PublishedNov 3, 2025
Effective Date-
RIN2070-AB27
Docket IDEPA-HQ-OPPT-2024-0514
Pages49016–49044 (29 pages)
Text FetchedYes

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ENVIRONMENTAL PROTECTION AGENCY <CFR>40 CFR Part 721</CFR> <DEPDOC>[EPA-HQ-OPPT-2024-0514; FRL-12730-01-OCSPP]</DEPDOC> <RIN>RIN 2070-AB27</RIN> <SUBJECT>Significant New Use Rules on Certain Chemical Substances (25-1.5e)</SUBJECT> <HD SOURCE="HED">AGENCY:</HD> Environmental Protection Agency (EPA). <HD SOURCE="HED">ACTION:</HD> Proposed rule. <SUM> <HD SOURCE="HED">SUMMARY:</HD> EPA is proposing 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 who intend to manufacture (defined by statute to include import) or process any of these chemical substances for an activity that is proposed as a significant new use by this rulemaking to notify EPA at least 90 days before commencing that activity. 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. </SUM> <EFFDATE> <HD SOURCE="HED">DATES:</HD> Comments must be received on or before December 3, 2025. </EFFDATE> <HD SOURCE="HED">ADDRESSES:</HD> Submit your comments, identified by docket identification (ID) number EPA-HQ-OPPT-2024-0514, online at <E T="03">https://www.regulations.gov.</E> Follow the online instructions for submitting comments. Do not submit electronically any information you consider to be Confidential Business Information (CBI) or other information whose disclosure is restricted by statute. Additional instructions on commenting and visiting the docket, along with more information about dockets generally, is available at <E T="03">https://www.epa.gov/dockets.</E> <FURINF> <HD SOURCE="HED">FOR FURTHER INFORMATION CONTACT:</HD> <E T="03">For technical information:</E> Joseph Said, New Chemicals Division (7405M), Office of Pollution Prevention and Toxics, Environmental Protection Agency, 1200 Pennsylvania Ave. NW, Washington, DC 20460-0001; telephone number: (202) 566-0848; email address: <E T="03">said.joseph@epa.gov.</E> <E T="03">For general information on SNURs:</E> William Wysong, New Chemicals Division (7405M), Office of Pollution Prevention and Toxics, Environmental Protection Agency, 1200 Pennsylvania Ave. NW, Washington, DC 20460-0001; telephone number: (202) 564-4163; email address: <E T="03">wysong.william@epa.gov.</E> <E T="03">For general information on TSCA:</E> The TSCA Assistance Information Service Hotline, Goodwill Vision Enterprises, 422 South Clinton Ave., Rochester, NY 14620; telephone number: (800) 471-7127 or (202) 554-1404; email address: <E T="03">TSCA-Hotline@epa.gov.</E> </FURINF> <SUPLINF> <HD SOURCE="HED">SUPPLEMENTARY INFORMATION:</HD> <HD SOURCE="HD1">I. Executive Summary</HD> <HD SOURCE="HD2">A. What is the Agency's authority for taking this action?</HD> TSCA section 5(a)(2) (15 U.S.C. 2604(a)(2)) authorizes EPA to determine that a use of a chemical substance is a β€œsignificant new use.” EPA must make this determination by rule after considering all relevant factors, including the factors in TSCA section 5(a)(2) (see also the discussion in Unit II.). <HD SOURCE="HD2">B. What action is the Agency taking?</HD> EPA is proposing SNURs for the chemical substances discussed in Unit III. These SNURs, if finalized as proposed, would require persons who intend to manufacture or process any of these chemical substances for an activity that is designated as a significant new use to notify EPA at least 90 days before commencing that activity. <HD SOURCE="HD2">C. Does this action apply to me?</HD> <HD SOURCE="HD3">1. General Applicability</HD> This action applies to you if you manufacture, process, or use the chemical substances contained in this proposed rule. The following list of North American Industrial Classification System (NAICS) codes is not intended to be exhaustive, but rather provides a guide to help readers determine whether this document applies to them. Potentially affected entities may include: β€’ Manufacturers or processors of one or more subject chemical substances (NAICS codes 325 and 324110), <E T="03">e.g.,</E> chemical manufacturing and petroleum refineries. <HD SOURCE="HD3">2. Applicability to Importers and Exporters</HD> This action may also apply to certain entities through pre-existing import certification and export notification requirements under TSCA ( <E T="03">https://www.epa.gov/tsca-import-export-requirements</E> ). Chemical importers are subject to TSCA section 13 (15 U.S.C. 2612), the requirements in 19 CFR 12.118 through 12.127, 19 CFR 127.28, and 40 CFR part 707, subpart B). Importers of chemical substances in bulk form, as part of a mixture, or as part of an article (if required by rule) must certify that the shipment of the chemical substance complies with all applicable rules and orders under TSCA, including regulations issued under TSCA sections 5, 6, 7 and Title IV. Pursuant to 40 CFR 721.20, any persons who export or intend to export a chemical substance that is the subject of this proposed rule on or after December 3, 2025 are subject to TSCA section 12(b) (15 U.S.C. 2611(b)) and must comply with the export notification requirements in 40 CFR part 707, subpart D. <HD SOURCE="HD2">D. What are the incremental economic impacts of this action?</HD> EPA has evaluated the potential costs of establishing SNUN reporting requirements for potential manufacturers (including importers) and processors of the chemical substances subject to these proposed SNURs. This analysis, which is available in the docket, is briefly summarized here. <HD SOURCE="HD3">1. Estimated Costs for SNUN Submissions</HD> If a SNUN is submitted, costs are an estimated $45,000 per SNUN submission for large business submitters and $14,500 for small business submitters. These estimates include the cost to prepare and submit the SNUN (including registration for EPA's Central Data Exchange (CDX)), and the payment of a user fee. Businesses that submit a SNUN would be subject to either a $37,000 user fee required by 40 CFR 700.45(c)(2)(ii) and (d), or, if they are a small business as defined at 13 CFR 121.201, a reduced user fee of $6,480 (40 CFR 700.45(c)(1)(ii) and (d)). The costs of submission for SNUNs will not be incurred by any company unless a company decides to pursue a significant new use as defined in these SNURs. Additionally, these estimates reflect the costs and fees as they are known at the time of this rulemaking. <HD SOURCE="HD3">2. Estimated Costs for Export Notifications</HD> EPA has also evaluated the potential costs associated with the export notification requirements under TSCA section 12(b) and the implementing regulations at 40 CFR part 707, subpart D. For persons exporting a substance that is the subject of a SNUR, a one-time notice to EPA must be provided for the first export or intended export to a particular country. The total costs of export notification will vary by chemical, depending on the number of required notifications ( <E T="03">i.e.,</E> the number of countries to which the chemical is exported). While EPA is unable to make any estimate of the likely number of export notifications for the chemical substances covered by these SNURs, as stated in the accompanying economic analysis, the estimated cost of the export notification requirement on a per unit basis is approximately $106. <HD SOURCE="HD2">E. What should I consider as I prepare my comments for EPA?</HD> <HD SOURCE="HD3">1. Submitting CBI</HD> Do not submit CBI to EPA through email or <E T="03">https://www.regulations.gov.</E> If you wish to include CBI in your comment, please follow the applicable instructions at <E T="03">https://www.epa.gov/dockets/commenting-epa-dockets#rules</E> and clearly mark the information that you claim to be CBI. Information so marked will not be disclosed except in accordance with procedures set forth in 40 CFR parts 2 and 703. <HD SOURCE="HD3">2. Tips for Preparing Your Comments</HD> When preparing and submitting your comments, see the commenting tips at <E T="03">https://www.epa.gov/dockets/commenting-epa-dockets.</E> <HD SOURCE="HD1">II. Background</HD> This unit provides general information about SNURs. For additional information about EPA's new chemical program go to <E T="03">https://www.epa.gov/reviewing-new-chemicals-under-toxic-substances-control-act-tsca.</E> <HD SOURCE="HD2">A. Significant New Use Determination Factors</HD> TSCA section 5(a)(2) states that EPA's determination that a use of a chemical substance is a significant new use must be made after consideration of all relevant factors, including: β€’ The projected volume of manufacturing and processing of a chemical substance. β€’ The extent to which a use changes the type or form of exposure of human beings or the environment to a chemical substance. β€’ The extent to which a use increases the magnitude and duration of exposure of human beings or the environment to a chemical substance. β€’ The reasonably anticipated manner and methods of manufacturing, processing, distribution in commerce, and disposal of a chemical substance. In determining what would constitute a significant new use for the chemical substances that are the subject of these SNURs, EPA considered relevant information about the toxicity of the chemical substances, and potential human exposures and environmental releases that may be associated with the substances, in the context of the four bulleted TSCA section 5(a)(2) factors listed in this unit and discussed in Unit III. These proposed SNURs ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Preview showing 10k of 210k characters. Full document text is stored and available for version comparison. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
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