The U.S. Environmental Protection Agency (EPA) announced on February 16, 2023, that the latest Toxic Substances Control Act (TSCA) Chemical Substance Inventory is now available on its website. The TSCA Inventory is a list of all existing chemical substances manufactured, processed, or imported in the United States. According to EPA, this update to the public TSCA Inventory is part of its biannual posting of non-confidential Inventory data. EPA plans the next regular update of the TSCA Inventory for summer 2023.
 
EPA states that the TSCA Inventory contains 86,685 chemicals, of which 42,170 are active in U.S. commerce. Other updates to the Inventory include new commercial activity data, unique identifier data, and regulatory flags (e.g., significant new use rules and test orders). EPA notes that additionally, several hundred substances are now listed with their specific chemical identities after having been moved from the confidential portion of the Inventory to the public portion as part of EPA’s TSCA confidential business information (CBI) review efforts.
 
Lastly, EPA reminds TSCA submitters to check regularly for any correspondence relating to their submissions in EPA’s Central Data Exchange (CDX). EPA states that it sends “critical and time-sensitive information regarding confidentiality claims through CDX, and failing to open this correspondence can delay the Agency’s processing of those claims.”