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EPA/OCSPP RIN: 2070-AL16 Publication ID: Fall 2024 
Title: Regulatory Investigation of N-(1,3-Dimethylbutyl)-N′-phenyl-p-phenylenediamine ("6PPD") and its Transformation Product, 6PPD-quinone Under the Toxic Substances Control Act (TSCA)  
Abstract:

EPA is initiating a proceeding for N-(1,3-Dimethylbutyl)-N′-phenyl-p-phenylenediamine (“6PPD”) (CASRN 793-24-8) and its transformation product, 6PPD-quinone under section 6(a) of the Toxic Substances Control Act (TSCA). This action is in response to an August 2023 petition filed under TSCA section 21, which allows citizens to petition EPA to initiate a proceeding for the issuance, amendment, or repeal of rules under TSCA sections 4, 6, or 8. The petition filed by Earthjustice on behalf of the Yurok Tribe, the Port Gamble S'Klallam Tribe, and the Puyallup Tribe of Indians requested that EPA promulgate a rule under TSCA sections 6(a)(2)(A)(i) and 6(a)(5) to prohibit the manufacture, processing, use, and distribution of 6PPD in and for tires due to ecotoxic effects on aquatic environments and organisms caused by its byproduct, 6PPD-quinone. This petition was granted by the EPA on November 1, 2023, wherein EPA committed to (a) publish an advance notice of proposed rulemaking (ANPRM) for 6PPD under TSCA section 6 in Fall 2024; and (b) begin additional data gathering activities under TSCA to address data needed to understand and characterize risk associated with 6PPD under a separate regulatory action.

 
Agency: Environmental Protection Agency(EPA)  Priority: Substantive, Nonsignificant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Prerule Stage 
Major: Undetermined  Unfunded Mandates: Undetermined 
CFR Citation: 40 CFR 751   
Legal Authority: 15 U.S.C. 2605 Toxic Substances Control Act    15 U.S.C. 2620 Toxic Substances Control Act   
Legal Deadline:  None
Timetable:
Action Date FR Cite
ANPRM  11/19/2024  89 FR 91299   
ANPRM Comment Period End  01/21/2025 
Regulatory Flexibility Analysis Required: Undetermined  Government Levels Affected: Federal, State, Tribal 
Federalism: Undetermined 
Included in the Regulatory Plan: No 
RIN Information URL: https://www.epa.gov/assessing-and-managing-chemicals-under-tsca  
Sectors Affected: 324 Petroleum and Coal Products Manufacturing; 325 Chemical Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Wyn Zenni
Environmental Protection Agency
Office of Chemical Safety and Pollution Prevention
1200 Pennsylvania Avenue NW,
Washington, DC 22630
Phone:202 564-6294
Email: zenni.wyn@epa.gov

Brooke Porter
Environmental Protection Agency
Office of Chemical Safety and Pollution Prevention
Mail Code 7404M, 1200 Pennsylvania Avenue NW,
Washington, DC 20460
Phone:202 564-6388
Email: porter.brooke@epa.gov