Now Available: Latest Update to the TSCA Inventory

Released January 17, 2025

The U.S. Environmental Protection Agency (EPA) has released the latest Toxic Substances Control Act (TSCA) Inventory.

The TSCA Inventory is a list of all existing chemical substances manufactured, processed or imported in the U.S. under TSCA that do not otherwise qualify for an exemption or exclusion. This biannual update to the public TSCA Inventory is part of EPA’s regular posting of non-confidential TSCA Inventory data. The next regular update of the TSCA Inventory is planned for summer 2025.

The TSCA Inventory now contains 86,847 chemicals, of which 42,495 are active (currently known to be in use) in U.S commerce. Other updates to the TSCA Inventory include commercial activity data and regulatory flags (e.g., significant new use rules).

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