EPA publishes process and timeline for expiring TSCA CBI claims beginning June 2026 (extension requests via CDX)

EPA published an update describing how it will implement TSCA’s 10-year expiration of most confidential business information (CBI) claims and how submitters can request extensions. EPA states the first CBI claims will begin expiring in June 2026. EPA plans to post (in early spring 2026) a public list of TSCA submissions with CBI claims expiring starting June 2026 and to send direct notices via EPA’s Central Data Exchange (CDX). To maintain confidentiality, submitters must file an extension request via CDX no later than 30 days before the claim’s expiration date and provide substantiation. Compliance teams should identify TSCA submissions with CBI claims approaching the 10-year mark, prepare substantiation materials, and ensure CDX access/workflows are in place to meet the “30 days before expiration” timing described by EPA.