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 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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

TSCA Chemical Substance Inventory

Prepublication Version of Federal Register Notice Reopening Form A Reporting Period

Below is a prepublication version of the Federal Register notice reopening the reporting period under the TSCA Active-Inactive Rule where companies report to the agency on which chemicals were manufactured, imported, or processed in the U.S. during the 10-year time period ending on June 21, 2016. The reporting period will reopen 30 days after publication in Federal Register and run for 60 days after that date.

Learn more about the TSCA Active-Inactive Rule.

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