The latest TSCA Inventory is now available. The TSCA Inventory is a list of all existing chemical substances manufactured, processed, or imported in the U.S. 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 Inventory is planned for winter 2022. The Inventory contains 86,607 chemicals of which 41,953 are active in U.S commerce. Other updates to the TSCA Inventory include new chemical substance additions, commercial activity data and regulatory flags, such as polymer exemptions, TSCA section 4 test orders and TSCA section 5 significant new use rules (SNURs).