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EPA/OCSPP RIN: 2070-AJ91 Publication ID: Spring 2015 
Title: Significant New Use Rule for Toluene Diisocyanates (TDI) and Related Compounds 

On January 15, 2015, EPA proposed a significant new use rule (SNUR) under section 5(a)(2) of the Toxic Substances Control Act (TSCA) for 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, toluene diisocyanate unspecified isomers (these three chemical substances are hereafter referred to as toluene diisocyanates or TDI) and related compounds (toluene diisocyanate trimer, poly(toluene diisocyanate), toluene diisocyanate dimer, and toluene diisocyanate cyclic trimer). Worker exposures are already subject to protective controls in occupational settings, but EPA is concerned about potential health effects that may result from exposures to the consumer or self-employed worker while using products containing uncured TDI and its related polyisocyanates (e.g., spray-applied sealants and coatings) or incidental exposures to the general population while such products are used in or around buildings including homes or schools. The SNUR would require persons who intend to manufacture (including import) or process these chemical substances for an activity that is designated as a significant new use by the proposed rule to notify EPA at least 90 days before commencing that activity. EPA also proposed to make the general SNUR article exemption for persons who import or process these chemical substances as part of an article inapplicable. The required notification would provide EPA with the opportunity to evaluate the intended use and, if necessary, to prohibit or limit that activity before it occurs.

Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: Undetermined 
CFR Citation: 40 CFR 721 (Revision)   
Legal Authority: 15 U.S.C. 2604(a) Toxic Substances Control Act   
Legal Deadline:  None
Action Date FR Cite
NPRM  01/15/2015  80 FR 2068   
NPRM Comment Period Extended  02/23/2015  80 FR 9427   
Final Rule  03/00/2016 
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL:  
Sectors Affected: 32411 Petroleum Refineries; 325 Chemical Manufacturing; 3255 Paint, Coating, and Adhesive Manufacturing; 326150 Urethane and Other Foam Product (except Polystyrene) Manufacturing; 326199 All Other Plastics Product Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Katherine Sleasman
Environmental Protection Agency
Office of Chemical Safety and Pollution Prevention
1200 Pennsylvania Avenue NW, Mail Code 7602M,
Washington, DC 20460
Phone:202 566-1204

Loraine Passe
Environmental Protection Agency
Office of Chemical Safety and Pollution Prevention
7405M, 1200 Pennsylvania Avenue NW,
Washington, DC 20460
Phone:202 564-9064