An official website of the United States government.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

TSCA Chemical Substance Inventory

TSCA Inventory Notification (Active-Inactive) Rule

The Toxic Substances Control Act (TSCA), as amended by the Frank R. Lautenberg Chemical Safety for the 21st Century Act, requires EPA to designate chemical substances on the TSCA Chemical Substance Inventory as either “active” or “inactive” in U.S. commerce. To accomplish that, EPA finalized a rule requiring industry reporting of chemicals manufactured (including imported) or processed in the U.S. over the past 10 years, ending on June 21, 2016. This reporting will be used to identify which chemical substances on the TSCA Inventory are active in U.S. commerce and will help inform the prioritization of chemicals for risk evaluation. The reporting period for manufacturers (includes importers) ended on February 7, 2018, and the reporting period for processors ends on October 5, 2018.  Additionally, designations for active chemical substances (i.e., already reported or exempt) are included as part of the Agency’s current publication of the TSCA Inventory. Designations for inactive chemical substance (i.e., not reported nor exempt) will be included as part of the Agency’s future publications of the TSCA Inventory.