On February 20, 2024, the U.S. Environmental Protection Agency (EPA) announced the latest update to the Toxic Substances Control Act (TSCA) Inventory. 

Key Findings of the Update 

The TSCA Inventory includes all existing manufactured, processed, or imported chemicals in the United States. As part of its regular release of non-confidential TSCA Inventory data, EPA updates the public TSCA Inventory every two years. 

The most recent TSCA Inventory contains a total of 86,741 chemical substances, with 42,293 substances classified as active. Updates to the TSCA Inventory also include data on unique identifiers, commercial activities, and regulatory flags including test orders and significant new use requirements (SNURs). 

Transition from Confidential to Public Information 

Furthermore, as part of EPA's ongoing review of TSCA confidential business information, certain substances remain on the list with their unique chemical identities after being moved from the confidential part of the Inventory to the public part. Since the last update of the TSCA Inventory in August 2023 EPA has moved approximately 900 chemicals from the confidential part to the public part of the Inventory.  

For more information on the TSCA Inventory, please visit: https://www.epa.gov/tsca-inventory.