EPA issues process update for expiring TSCA Confidential Business Information (CBI) claims beginning June 2026 (CDX extension requests required)

EPA published an implementation/process update describing how it will handle the first wave of TSCA CBI claim expirations beginning in June 2026 (reflecting TSCA’s 10-year sunset for many non-exempt CBI claims). EPA states it will (1) post lists (early spring) of TSCA submissions with CBI claims expiring starting June 2026 and (2) notify submitters via EPA’s Central Data Exchange (CDX). To maintain confidentiality, submitters must file CBI extension requests electronically via CDX no later than 30 days before the claim’s expiration and provide substantiation; otherwise EPA may disclose the information. EPA also indicates it is developing a new CDX tool for these extension requests and intends it to be ready before June 2026.