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

EPA published an implementation/process update for Toxic Substances Control Act (TSCA) confidential business information (CBI) claims that will begin expiring starting June 2026 under TSCA §14(e). EPA indicates it will post public lists of TSCA submissions with expiring CBI claims (expected in early spring) and also send direct notifications via EPA’s Central Data Exchange (CDX). To maintain CBI protection, companies must submit an extension request electronically via CDX no later than 30 days before the claim expiration date and include substantiation. EPA also notes it is developing a new CDX tool to support extension requests ahead of the June 2026 expiration wave. Compliance teams should identify TSCA submissions with expiring claims (including via TSCA Inventory resources) and prepare substantiation and CDX workflows to avoid inadvertent public disclosure.