An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Assessing and Managing Chemicals under TSCA

EPA Response to TSCA Section 21 Petition

This document provides the reasons for EPA’s denial of a petition it received under section 21 of the Toxic Substances Control Act (TSCA).

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.