The first wave of Toxic Substances Control Act (TSCA) Confidential Business Information (CBI) claims began expiring on June 22, 2026. For chemical manufacturers, importers, and any company that filed confidentiality claims with the U.S. Environmental Protection Agency (EPA) after mid-2016, this is a live compliance obligation with a hard consequence: information you have treated as protected for a decade can become public unless you act.

This guide explains what the TSCA CBI claim expiration is, how the 10-year rule works, how to file an extension through EPA's Central Data Exchange (CDX), and how to identify which of your own submissions are exposed.

Key Takeaways

⏳ Most TSCA CBI claims expire 10 years after they were asserted. The first claims began expiring June 22, 2026, on a rolling basis.

📌 To maintain confidentiality, submitters must file an extension request through EPA's CDX at least 30 days before the claim's expiration date.

⚠️ Without an approved extension, EPA may make the claimed information public without further notice.

📊 Chemical identity claims follow a different clock: they expire 10 years from the first approved claim for that identity by any submitter after June 22, 2016.

🏭 Chemical, petrochemical, plastics, semiconductor, and industrial manufacturers with post-2016 TSCA filings are directly affected.

📄 EPA publishes lists of expiring claims at least 60 days in advance and refreshes them monthly; the first list is already live.

What Is the TSCA CBI Claim Expiration?

TSCA CBI is commercially sensitive information, such as a chemical's specific identity, structure, or the association between a company and a substance, that a submitter asks EPA to protect from public disclosure. When a claim is asserted and substantiated, the underlying information is shielded from disclosure for a defined period.

The 2016 Frank R. Lautenberg Chemical Safety for the 21st Century Act amended TSCA and, under Section 14(e), capped that protection at 10 years unless the submitter requests and EPA approves an extension. Because the Lautenberg Act was signed on June 22, 2016, the earliest post-amendment claims reached their 10-year limit on June 22, 2026, according to EPA's CBI claim expiration guidance.

For companies managing chemical and hazmat compliance, this converts a previously static filing into a recurring obligation with a fixed renewal window.

Why June 22, 2026 Matters

June 22, 2026 marks ten years since the Lautenberg amendments took effect. From that date forward, EPA anticipates a continuous, rolling expiration process affecting several thousand submissions over the following months and years, as documented in the agency's January 2026 Federal Register notice.

EPA published its first list of expiring claims on April 23–24, 2026, covering claims that expire between June 22, 2026, and July 31, 2026. The agency refreshes this list monthly. This is no longer a future risk to plan for; the first claims have already reached expiration, and the next tranches follow every month. Manufacturers tracking obligations across the broader TSCA framework should fold CBI expiration into their standing regulatory calendar rather than treating it as a one-time event.

TSCA CBI claim extension decision workflow for manufacturers filing through CDX

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How Long Do TSCA CBI Claims Last?

Not every claim runs on the same clock. This distinction is where many compliance teams misjudge their exposure.

The Standard 10-Year Rule

For most non-exempt claims that are not for a specific chemical identity, the expiration date is set 10 years from the date the claim was asserted, which is normally the date the information was submitted to EPA. Certain information that is generally not subject to substantiation, such as specific production or import volumes and some marketing and sales information, is not subject to this 10-year expiration.

The Chemical Identity Exception

Claims for the specific chemical identity of a substance follow a different rule. Their expiration is set 10 years from the submission date of the first approved CBI claim for that chemical identity made by any TSCA submitter after June 22, 2016.

The practical consequence is significant: if another company claimed confidentiality for the same substance identity earlier than you did, your claim expires based on that earlier date. A later submitter may therefore have far less than 10 years of protection from its own filing date. Companies with overlapping submissions on the same substance should treat this as a priority review item within their materials and environmental compliance program.

How to Extend a TSCA CBI Claim

To keep a claim protected, the submitter must file an extension request electronically through EPA's Central Data Exchange (CDX) using the agency's dedicated CBI claim extension request tool. The request must be submitted no later than 30 days before the claim's expiration date and must include substantiation demonstrating why continued confidential treatment remains warranted.

An approved extension maintains protection for an additional 10 years. If the request is not approved, or is not filed in time, EPA may make the information public without further notice to the submitter. EPA publishes its lists of expiring claims at least 60 days before expiration and also sends direct notice to the original submitter through CDX, so companies should keep CDX account access current and monitored.

Because the substantiation burden is higher on renewal than it may have been at original assertion, teams should not assume a claim will be extended automatically. Building audit-ready documentation that captures why each claim qualifies for continued protection reduces the risk of a rushed or incomplete filing.

Who Is Affected

The expiration reaches any organization that filed TSCA CBI claims after June 22, 2016, whether through Chemical Data Reporting (CDR), Section 5 premanufacture notices (PMNs), low volume exemptions (LVEs), notices of commencement (NOCs), or other TSCA submission types.

Companies in chemical manufacturing and semiconductor and high-tech face particular complexity where a single substance may appear across many submissions filed by different entities over the past decade.

What Happens If You Miss the Deadline

The enforcement mechanism here is not a fine. It is disclosure. If a claim expires without an approved extension, EPA may release the previously protected information to the public without further notice. For chemical identity or formulation data, that can mean exposing information competitors were previously unable to see.

This makes the expiration a distinct category of compliance risk. Unlike a reporting deadline where late submission may carry a penalty but the information stays private, a missed CBI renewal is effectively irreversible once the information is public. Treating claim tracking as a continuous obligation, rather than a periodic manual check, is the practical safeguard. This is where proactive compliance risk management matters more than reactive review.

A Separate Development: TSCA Health and Safety Data Reporting Extension

Companies tracking TSCA activity in 2026 should not confuse the CBI expiration with a second, unrelated action. On May 22, 2026, EPA extended the deadline for its TSCA Section 8(d) Health and Safety Data Reporting rule to May 21, 2027.

That rule, finalized December 13, 2024, requires manufacturers and importers of 16 specified chemical substances to submit lists and copies of certain unpublished health and safety studies. EPA extended the deadline because it is reconsidering the rule, not because of the CBI transition. The two obligations have different legal bases, different deadlines, and different affected populations. Keep them tracked separately in your TSCA framework planning.

Comparison of TSCA CBI claim expiration and health and safety reporting deadlines in 2026

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The Operational Challenge: Finding Your Own Claims

EPA's expiring-claims lists identify submissions by case number, expiration date, and submission type, not by company name. That design places the burden on each company to match the listed identifiers against its own filing records, including 2016 CDR filings and Section 5 submissions.

For a large manufacturer, this is a data problem before it is a legal one. Records may be spread across CDX accounts, legacy filing systems, spreadsheets, and documentation inherited through mergers or acquisitions. A company that reorganized in the past decade may not even know which submissions it now owns.

The teams best positioned to respond are those with a centralized compliance data foundation that links every historical submission to a substance, an owner, and an expiration date. Those still relying on spreadsheets and disconnected records face a manual reconciliation exercise against a monthly-moving target.

Compliance Preparation Checklist

✅ Inventory every TSCA submission filed after June 22, 2016, and identify which contain CBI claims.

✅ Cross-reference EPA's monthly expiring-claims list against your own case numbers and submission records.

✅ Flag chemical identity claims for the earlier-submitter exception, which can shorten your protection window.

✅ Decide, claim by claim, whether continued confidentiality is still necessary and defensible.

✅ File extension requests through CDX at least 30 days before each expiration date, with substantiation prepared in advance.

✅ Maintain current CDX access so you receive direct EPA notices.

✅ Track the separate Section 8(d) health and safety reporting deadline of May 21, 2027.

How AI and Centralized Compliance Data Support TSCA CBI Management

The recurring nature of the CBI sunset, monthly lists, per-claim deadlines, and a substantiation burden, is well suited to systematized management rather than manual tracking. This is the category of problem Certivo is built for.

As a centralized system of record for product compliance, Certivo can hold historical submission data, associated substances, and claim status in one place, so a company can identify affected filings when EPA publishes each monthly list. CORA-powered regulatory intelligence supports horizon scanning across chemical frameworks, helping teams connect a published expiration list to the specific submissions and substances it touches.

CORA-enabled document analysis can also assist teams in parsing and organizing legacy submission records that are otherwise scattered, reducing the time it takes to answer a straightforward but high-stakes question: which of our claims are expiring, and when. The objective is not to eliminate the legal review each claim requires, but to shift the work from reactive, manual reconciliation toward continuous, audit-ready visibility. For broader context on this shift, see Certivo's guide to product compliance management.

Executive Outlook

The TSCA CBI claim expiration is not a single deadline but a permanent feature of the regulatory landscape. Every year, another decade's worth of claims will reach their limit, and each will demand a decision and, where confidentiality still matters, a timely substantiated extension. Companies that build a durable, centralized process now will absorb each monthly cycle without disruption. Those that treat it as an annual scramble will carry avoidable disclosure risk.

For enterprise leaders, the strategic point is straightforward: confidential chemical data that took years to protect can be lost through a missed administrative window. Managing it well is a matter of visibility, ownership, and cadence.

To understand your exposure across TSCA submissions and other chemical frameworks, request a compliance review with Certivo.