The European Union has formally proposed adding the brominated flame retardant TBPH to the Stockholm Convention on Persistent Organic Pollutants. The proposal will be screened by the POPs Review Committee at POPRC-22 in Rome from 21 to 25 September 2026. For manufacturers, this is an early-warning signal rather than an immediate obligation, but two features make it worth acting on now: a parallel EU REACH restriction that could bite far sooner, and existing SVHC duties that already apply today.

Key Takeaways

📌 The EU has proposed listing TBPH (CAS 26040-51-7) under the Stockholm Convention, with screening at POPRC-22 on 21 to 25 September 2026.
⏳ A Convention listing decision by the Conference of the Parties is possible in 2029 at the earliest, so no global obligation exists yet.
⚠️ A parallel EU REACH restriction is the nearer-term risk and could affect EU market access years before any global decision.
📄 TBPH already carries SVHC duties: it has been on the REACH Candidate List since 17 January 2023, so Article 33 communication and SCIP notification apply today above 0.1% w/w.
🔗 TBPH is frequently a minority component of proprietary flame-retardant blends, so it often will not appear by name on supplier declarations.
🏭 Wire and cable, construction, furniture, electronics, and plastics manufacturers, particularly those sourcing imported components, carry the most exposure.

What the EU proposed, and where it stands

TBPH, bis(2-ethylhexyl) tetrabromophthalate, is a novel brominated flame retardant and plasticiser often used as a replacement for the older polybrominated diphenyl ethers. The EU nominated it because, on the available science, it meets the Annex D screening criteria of persistence, bioaccumulation, potential for long-range environmental transport, and adverse effects.

The proposal has moved through the EU's internal steps. The Commission adopted COM(2026) 51 on 4 February 2026, and the Council then authorised submission through Council Decision (EU) 2026/878 on 30 April 2026, seeking an Annex A (elimination) listing. Screening now sits with the POPRC at its September 2026 meeting, tracked as document UNEP/POPS/POPRC.22/4. You can verify the current status on ECHA's official list of substances proposed as POPs and read the proposal itself via COM(2026) 51 on EUR-Lex. For teams building a broader watchlist, Certivo's POPs framework page sets out how these obligations connect to product compliance.

Where TBPH sits in the listing lifecycle

A Stockholm Convention listing is a long, staged process. Understanding the stage matters, because it tells compliance teams how much time they realistically have and which parallel track deserves attention first.

The scientific review alone takes at least three years, which is why the Convention decision is not expected before 2029. This is confirmed in the Commission's own proposal text and the Convention's process documentation on pops.int. The practical takeaway for leadership is that the global timeline is slow, but as the next section explains, it is not the timeline that governs EU market access.

The parallel REACH restriction is the nearer-term risk

This is the most operationally significant feature of the TBPH proposal, and it separates TBPH from the companion DBDPE nomination discussed below. Per COM(2026) 51, ECHA assessed a group of brominated flame retardants including TBPH, and on that basis the Commission is issuing ECHA a mandate to prepare an Annex XV dossier for a restriction under REACH. The stated intent is to progress the EU and international tracks in parallel so the substance is not restricted domestically for years while remaining unrestricted globally.

The consequence for planning is direct: a REACH restriction could affect EU market access well before any Convention decision. As of early 2026 the mandate was being issued, and no Annex XV restriction dossier had yet been submitted. Compliance teams should therefore monitor ECHA's Registry of Intentions as the leading indicator, ahead of the Stockholm timeline. Certivo's chemical and hazmat compliance solution and its REACH framework page are useful reference points for tracking how a restriction proposal would translate into product-level obligations.

TBPH Stockholm Convention versus parallel EU REACH restriction timeline comparison

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TBPH already carries SVHC obligations today

A frequent misreading is to treat the Stockholm proposal as the start of TBPH's regulatory relevance. It is not. TBPH was added to the REACH Candidate List of substances of very high concern on 17 January 2023, in a batch of nine substances, on very persistent and very bioaccumulative (vPvB) grounds under REACH Article 57(e). This is confirmed by ECHA's announcement of that update, ECHA adds nine hazardous chemicals to Candidate List, and the ECHA substance record.

That status carries live duties, independent of anything the Stockholm proposal does. Above 0.1% weight by weight in an article, suppliers owe Article 33 communication to customers and downstream users, and the substance must be notified to the SCIP database. Companies importing or manufacturing above one tonne per year also have registration duties. For teams already managing candidate-list obligations, the practical work is the same discipline extended to a new substance: reliable BOM-level material mapping and defensible, audit-ready documentation of where the substance sits and what was disclosed when.

Which products and industries are in scope

The EU nomination describes TBPH as a flame retardant and plasticiser used in flexible PVC for wire and cable insulation, rigid polyurethane in construction, and flexible polyurethane in upholstery. ECHA's substance infocard additionally supports use in electronic equipment and in plastic and rubber products.

One nuance matters for scoping. During the public consultation, which ran from 18 June to 13 August 2025, some commenters asserted that TBPH is not used in the EU. The Commission's response was that it is likely used outside the EU and can be present in imported products. For most manufacturers, that shifts the screening emphasis toward imported components and non-EU tiers of the supply chain rather than EU-based production. This is precisely where multi-tier supply chain transparency becomes the deciding factor in whether a substance is caught early or missed.

Why supplier declarations will often miss TBPH

TBPH is rarely sold or specified on its own. It appears inside proprietary flame-retardant blends. In the commercial additive package known as Firemaster 550, for example, TBPH is a minor constituent, present at roughly 8 percent alongside larger fractions of other flame retardants and phosphate esters. The exact split varies by formulation and should be treated as approximate.

The compliance implication is what counts. Because TBPH sits inside a mixture and is often a minority component, a name-level supplier declaration will frequently come back clean even when TBPH is present. Screening a bill of materials for the string "TBPH" is not enough. Teams need full formulation disclosure, and they need a way to interrogate safety data sheets and declarations at the substance level. This is a core use case for automated supplier data collection paired with AI document parsing that reads what is actually in a mixture rather than what a checkbox asserts.

TBPH hidden as a minority component inside proprietary flame retardant supplier blends

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TBPH and DBDPE are separate proposals at the same meeting

POPRC-22 will screen a second brominated flame retardant at the same session: decabromodiphenyl ethane (DBDPE), nominated by Norway. It is easy to conflate the two, and easy to assume they are one action. They are not. Keeping them distinct in internal tracking prevents duplicated effort and mismatched watchlists.

DBDPE is also progressing separately under EU REACH as an SVHC candidate. Certivo's note on ECHA adding DBDPE to the candidate list is a useful companion for teams tracking both substances, and the broader SVHC and Annex XVII changes overview shows how these listings tend to move together.

What compliance teams should do now

The right posture at the proposal stage is preparation, not reformulation. A listing is years away, but the data work that makes a future response cheap is best done early.

1. Screen BOMs and SDS for TBPH (CAS 26040-51-7, EC 247-426-5), with emphasis on flexible PVC cabling, rigid and flexible polyurethane, electronics, and imported components.

2. Request full formulation disclosure, not name-level declarations, because TBPH commonly sits inside proprietary blends and will not surface by name.

3. Track the parallel REACH Annex XV process as the nearer-term risk, ahead of the 2029-earliest Stockholm timeline.

4. Keep TBPH and DBDPE distinct in tracking. Separate parties, separate document numbers, same meeting.

5. Confirm existing SVHC controls are live. Because TBPH has been on the Candidate List since January 2023, verify that Article 33 and SCIP duties are already being met above 0.1% w/w.

6. Preserve point-in-time evidence of screening results and supplier responses, so that a future customer audit or authority inspection can be answered from records rather than reconstructed.

For a wider view of how to manage overlapping chemical phase-outs, Certivo's guidance on proactive POPs compliance strategies and its materials and environmental compliance solution both address the recurring pattern behind substances like TBPH.

How Certivo and CORA support early-stage regulatory tracking

Early-warning signals like the TBPH proposal are where compliance programs either build a quiet advantage or accumulate silent risk. The substance is not restricted, so nothing forces action, which is exactly why it is easy to miss until a REACH restriction or a customer requirement makes it urgent.

Certivo functions as a system of record for this kind of work. CORA-powered regulatory intelligence tracks proposals through their lifecycle stages, so a proposal today is connected to the products, materials, and suppliers it will eventually touch. When a substance moves from proposal to screening to restriction, the affected bills of materials are already mapped, supplier declarations are already on file, and the evidence needed for a customer audit is already retrievable. That shift, from reactive scramble to continuous, audit-ready readiness, is the practical value of treating an early proposal seriously.

To understand your current exposure to TBPH and other emerging brominated flame retardant restrictions across your product portfolio and supply chain, request a compliance risk assessment.