EPA Mandates TRI Reporting for DINP Despite Limited Scientific Backing

Horizontal New TRI Requirements - The Chemical Company

On July 13th, 2023, the EPA finalized a rule adding DINP to the TRI Reporting requirements under the EPCRA and PPA acts. The ruling does not impact being able to use DINP in the United States, it is an inventory reporting requirement. Despite significant opposition from industry groups, regulatory bodies, producers, end-users, processors and more, the EPA passed the ruling requiring anyone processing or storing more than 10,000 – 25,000 pounds of DINP to be subjected to the reporting requirements, depending on your business type. The ruling goes into effect September 12, 2023, with reporting requirements beginning January 1st, 2024.

TCC strongly disagrees with the EPA’s decision, and feels that adding DINP to the TRI list may cause an unnecessary shift away from DINP, to raw materials that have not been as extensively reviewed and evaluated by regulatory bodies, and may in fact be more toxic than DINP.

DINP has a long standing reputation as a safe, general-purpose plasticizer for a wide range of applications. This has been proven again and again, most recently by the consensual decision of the European Risk Assessment Committee in 2018, which concluded no classification of DINP is warranted. DINP is not classified as a hazardous substance by any national chemical legislation. DINP is proven to be safe in a wide range of applications, including flooring, wall coverings, automotive, wire and cable, and more. We are not expecting any impact to DINP demand or usage in the United States at this time, the only impact is simply an additional reporting requirement.

TCC will continue to support the numerous compliant, safe, and cost-effective applications of DINP in everyday life. We are fortunate to have strong support from our decades-long producing partner relationships. If you have any questions, or would like further information on the TRI listing, contact your TCC sales or customer representative, or contact us by clicking here.

For a comprehensive overview of these new reporting directives, please click here.



As part of our regulatory compliance efforts for this product we wish to inform you that the Environmental Protection Agency (EPA) has added diisononyl phthalate (DINP) to the list of toxic chemicals subject to the Toxics Release Inventory (TRI) reporting requirements under the Emergency Planning and Community Right-to-Know Act and the Pollution Prevention Act. 

The rule requires certain facilities in certain industry sectors that manufacture or process more than 25,000 pounds of DINP-category chemicals per year, or otherwise use more than 10,000 pounds of DINP-category chemicals per year, to report certain information to TRI.

Reporting will be required effective January 1, 2024.  For more information, please see the following link to EPA


This information is provided in good faith and based on information available from EPA. It is not a substitute for conducting your own due diligence. The Chemical Company expects that all customers make independent inquiry into the regulatory status of the materials being utilized.



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