Brominated Flame Retardants (BFRs): 3 Classes, 16 Substances, Uses and Regulation

Brominated flame retardants (BFRs) are bromine-containing additives that release hydrogen bromide in a fire and trap the radicals that keep the flame burning; in high-impact polystyrene, about 10.7 wt% bromine plus 5 wt% antimony trioxide reaches UL 94 V-0 at 0.8 mm. Some BFRs, such as the PBDEs and HBCD, are now global persistent organic pollutants (POPs), while others, such as DBDPE, remain in use under growing regulatory pressure, so which BFR is still used in which plastic, and under which rules?

BFRs sold 390,000 t in 2011, about 19.7 % of flame-retardant volume by weight, which makes them one of the largest chemical groups among plastic additives. That single figure from 2011 is the newest BFR-specific tonnage in the verified record, and it already signals the scale of a family that spans three chemically distinct classes.

This page covers how BFRs work in the gas phase and why antimony trioxide is their usual partner, the three chemical classes that now decide EU regulatory treatment (aromatic, aliphatic/cycloaliphatic and polymeric), the 16 named BFR substances used in plastics today, which polymers use which system and at what loading, how much bromine a plastic actually needs, which BFRs are banned and which are still legal under Stockholm, REACH, RoHS, Ecodesign, TSCA and Canada's PCTSR, how legacy BFRs complicate recycling, what replaces them, which fire tests measure their performance and who manufactures them.

Key figures

• 3 chemical classes of BFRs used in plastics: aromatic, aliphatic/cycloaliphatic and polymeric.
• 7 BFR entries sit on the EU REACH Candidate List of substances of very high concern (SVHC) as of 22 September 2026.
• 10 mg/kg is the EU POPs unintentional-trace-contaminant limit for the sum of tetra- to decaBDE in mixtures and articles, under Delegated Regulation (EU) 2025/1482.
• December 2026 is when ECHA plans to submit a draft Annex XV restriction dossier for non-polymeric aromatic brominated flame retardants (ABFRs).

What Are Brominated Flame Retardants?#

Brominated flame retardants, also called brominated fire retardants in older industry literature, are halogenated flame retardants whose active element is bromine: compounded into or reacted into a plastic, they delay ignition and slow flame spread without making the plastic non-combustible. They sit alongside chlorinated siblings such as Dechlorane Plus, chlorinated paraffins and chlorinated phosphates (TCEP, TCPP, TDCPP) in the halogenated flame-retardant family, and like every flame retardant they work by delaying ignition, slowing flame spread and reducing heat release rather than by eliminating combustibility altogether.

A BFR reaches the plastic in one of three ways: as an additive that is physically blended into the melt and can migrate or bloom to the surface, as a reactive component that is chemically bonded into the polymer backbone and does not migrate, or as a high-molecular-weight polymeric BFR that is itself a large molecule rather than a small migrating one. The hub on flame retardants for plastics compares BFRs with mineral, phosphorus and nitrogen flame-retardant systems used across the same polymers.

How much brominated flame retardant is used?#

About 390,000 t of brominated flame retardants were sold in 2011, roughly 19.7 % of all flame retardants by volume, and BFRs remain the leading use of bromine according to the US Geological Survey (Mineral Commodity Summaries 2025). Flame retardants overall account for about 13 % of additive consumption by weight, and the global flame-retardant chemicals market was valued at USD 8.1 to 9.3 billion in 2025 (analyst range). World bromine production reached about 400,000 t in 2024 outside the United States, led by Israel (140,000 t), Jordan (120,000 t) and China (100,000 t), and the US Geological Survey names brominated flame retardants as bromine's single largest application. No BFR-specific tonnage newer than the 2011 figure exists in the verified record, so every volume figure on this page carries its year rather than being extrapolated forward.

How Do Brominated Flame Retardants Work?#

Brominated flame retardants work in the gas phase: they break the flame's chain reaction rather than cooling the plastic or building a char. A burning plastic runs through a combustion cycle: heat pyrolyses the polymer into flammable volatiles, those volatiles ignite, and gas-phase chain-branching reactions (H· + O2 → OH· + O·) keep feeding heat back into the polymer. Flame retardants interrupt this cycle at one or more points, and BFRs interrupt it at the radical-chain step itself. Gas-phase and condensed-phase modes of action are compared in detail under how flame retardants work.

Gas-phase radical trapping by hydrogen bromide#

A brominated flame retardant releases hydrogen bromide as the plastic pyrolyses, and the HBr replaces the highly reactive H· and OH· radicals of the flame with the far less reactive bromine radical. Radical trapping by a BFR runs in 3 steps.

1. The BFR decomposes under flame heat and releases hydrogen bromide (HBr) or, when antimony trioxide is present, antimony tribromide (SbBr3).
2. The halogen acid scavenges the flame's radicals: HBr or SbX3 reacts with the highly reactive H· and OH· radicals that sustain gas-phase combustion.
3. A less reactive bromine radical (Br·) forms in their place, which slows the chain-branching reactions that feed heat back into the polymer.

This mechanism holds whether the bromine is free to migrate or not. When TBBPA is reacted into an epoxy backbone rather than blended as an additive, it is not free to migrate through the plastic, but its bromine still performs the same radical-trapping function once the material is heated in a fire.

Why is antimony trioxide used with brominated flame retardants?#

Antimony trioxide is used with brominated flame retardants because it has almost no flame-retardant effect on its own but turns their hydrogen bromide into volatile antimony tribromide, which carries the bromine into the flame step by step. Antimony trioxide (Sb2O3, CAS 1309-64-4) reacts with the hydrogen halide released by the BFR in a stepwise sequence that ends in the volatile SbX3 species reaching the gas phase, where it contributes its own halogen to radical trapping; antimony trioxide is registered under REACH and used this way across HIPS, ABS, polypropylene, polyamide, PBT and PVC wherever a brominated or chlorinated donor is present.

Sb2O3 + 2 HX  ->  2 SbOX + H2O
5 SbOX        ->  Sb4O5X2 + SbX3
4 Sb4O5X2     ->  5 Sb3O4X + SbX3
3 Sb3O4X      ->  4 Sb2O3 + SbX3

In HIPS, 5 wt% antimony trioxide combined with 10.7 wt% bromine (delivered as DBDPE) is enough to reach UL 94 V-0 at 0.8 mm, the loading level used throughout this page's dosage figures. Antimony trioxide carries a harmonised CLP classification of Carc. 2 (H351), is listed by IARC in Group 2A for trivalent antimony (2022) and has been on California's Proposition 65 cancer list since 1 October 1990, but it is not an SVHC.

Where regulators or brand owners want an antimony-free system, zinc stannate, zinc hydroxystannate, zinc borate, sodium antimonate and antimony pentoxide all serve as alternative synergists. Zinc borate and the stannates are compared with Sb2O3 on dosage and hazard profile under flame retardant synergists.

What Are the 3 Classes of Brominated Flame Retardants?#

The 3 classes of brominated flame retardants are aromatic BFRs such as DBDPE and TBBPA, aliphatic and cycloaliphatic BFRs such as HBCD and FR-370, and polymeric BFRs such as brominated polystyrene, a split that now decides which BFRs EU regulators target. This aromatic, aliphatic/cycloaliphatic, polymeric order runs through every table on this page, because it mirrors the boundary of the EU's planned restriction: aromatic non-polymeric BFRs are the target, while polymeric BFRs sit outside its scope by design. Chlorine-based siblings such as Dechlorane Plus follow the same structural logic and are covered separately under chlorinated flame retardants.

1. Aromatic brominated flame retardants (ABFRs)#

Aromatic brominated flame retardants (ABFRs) carry their bromine on benzene rings, as in DBDPE, EBTBP, FR-245 and TBBPA, and they form the largest BFR class in plastics by number of named substances: 9 of the 16 BFRs used in plastics are aromatic. "ABFR" is the term ECHA has used since its 2023 flame-retardant regulatory strategy, and its investigation report of 18 December 2024 found about 60 ABFRs potentially on the EU market, of which 25 are registered under REACH and more than 40 are classified, or likely to be classified, PBT or vPvB (persistent, bioaccumulative and toxic, or very persistent and very bioaccumulative). This concentration of hazard findings inside one structural class is the reason the aromatic group, not the whole BFR family, is the target of the restriction described later on this page.

2. Aliphatic and cycloaliphatic brominated flame retardants#

Aliphatic and cycloaliphatic brominated flame retardants carry bromine on saturated carbon chains or rings, as in HBCD, FR-370 and the reactive diol DBNPG. HBCD is cycloaliphatic and was the legacy flame retardant for EPS and XPS insulation before its Stockholm Convention listing; FR-370 (tris(tribromoneopentyl) phosphate) combines 70 % bromine with 3 % phosphorus for polypropylene and HIPS; DBNPG is a reactive diol used in unsaturated polyester and polyurethane. ECHA's March 2023 flame-retardant strategy places aliphatic BFRs in a separate track from the aromatic group, noting that more hazard data is needed before they can be prioritised the same way.

3. Polymeric brominated flame retardants#

Polymeric brominated flame retardants are high-molecular-weight polymers such as brominated polystyrene and PolyFR, and their size keeps them from blooming and places them outside the planned EU restriction of non-polymeric aromatic BFRs. PolyFR has a molecular weight of about 100,000, and poly(pentabromobenzyl acrylate), sold as FR-1025, reaches about 600,000; both figures are far above the molecular weight range where migration and bioavailability become a regulatory concern for small-molecule additives. Polyphosphonates and other non-brominated high-molecular-weight systems are covered alongside them under polymeric flame retardants.

Reactive vs additive brominated flame retardants#

Additive BFRs such as DBDPE are blended into the plastic and can migrate, whereas reactive BFRs such as TBBPA in FR-4 epoxy laminates are bonded into the polymer backbone. Additive BFRs are the type most affected by migration-based regulation because they remain physically separate from the polymer chain; reactive BFRs avoid that pathway because the bromine becomes part of the molecule itself. An Oeko-Institut dossier prepared for the RoHS review found that reactive TBBPA in FR-4 laminates leaves free (unreacted) TBBPA well below 0.1 % of the laminate. The terms are defined in full under reactive vs additive flame retardants.

Which 16 Brominated Flame Retardants Are Used in Plastics?#

The 16 brominated flame retardants used in plastics are 9 aromatic BFRs led by DBDPE and TBBPA, 3 aliphatic or cycloaliphatic BFRs led by HBCD, and 4 polymeric BFRs led by brominated polystyrene; 7 of them sit on the EU Candidate List. Table 1 gives the identity, bromine content, main plastics and dated EU regulatory status of every one of them, in the aromatic, aliphatic, polymeric order used throughout this page.

Table 1. The 16 brominated flame retardants used in plastics

Status as of 22 September 2026. "Not an SVHC" means not on the Candidate List on that date; ECHA's ABFR screening group is not itemised in verified sources.

The substitution chain behind this table runs from decaBDE to DBDPE to the polymeric BFRs: DBDPE was commercialised in the 1990s as the decaBDE replacement, and it became an SVHC in its own right on 5 November 2025, illustrating how each generation of substitute has eventually drawn its own regulatory scrutiny.

Request quotes for DBDPE, brominated polystyrene, antimony trioxide or FR masterbatch: send grade or CAS number, volume, polymer and country through the plastic additive supplier finder.

Is DBDPE the same as decaBDE?#

No: DBDPE (decabromodiphenyl ethane, CAS 84852-53-9) links its two pentabromophenyl rings with an ethane bridge, while decaBDE (decabromodiphenyl ether, CAS 1163-19-5) links them with an oxygen atom, and the two carry different regulatory status. DecaBDE has been a global POP since 2017; DBDPE only entered the EU Candidate List as an SVHC on 5 November 2025 and remains in commercial use.

Which Plastics Use Brominated Flame Retardants?#

Brominated flame retardants are used mainly in styrenics (HIPS, ABS), polystyrene foams, polypropylene, glass-filled polyamide and PBT, epoxy laminates, and wire and cable compounds, almost always with antimony trioxide as the synergist. Table 2 gives the typical system and target rating for each polymer group.

Table 2. BFR systems by polymer

Download the Flame Retardant Selector Matrix (PDF): BFR and halogen-free systems by polymer and UL 94 rating, available after registering an email, role and company.

HIPS, ABS and other styrenics#

HIPS and ABS are the classic BFR plastics: about 8-12 wt% DBDPE, delivering 10.7 wt% bromine, plus 5 wt% antimony trioxide gives HIPS a UL 94 V-0 rating at 0.8 mm. Styrenics burn with heavy soot, so BFR systems are chosen partly for their low smoke relative to alternatives. FR-245 serves the same role in ABS and HIPS, usually combined with antimony trioxide and a PTFE anti-drip agent, and historic decaBDE use in HIPS TV housings is the origin case that later regulation targeted. Since 1 March 2021, the EU's Ecodesign Regulation (EU) 2019/2021 has banned every halogenated flame retardant in the enclosures and stands of electronic displays, which has pushed this category toward halogen-free systems in that specific application even where BFRs remain legal elsewhere. Halogen-free PC/ABS routes are compared with brominated systems on flame retardants for ABS.

EPS and XPS insulation foam#

EPS and XPS insulation foams switched from HBCD to PolyFR, a polymeric brominated butadiene-styrene copolymer, after HBCD was listed under the Stockholm Convention in 2013. Unmodified EPS has a limiting oxygen index of about 18, while construction standards such as ASTM C578 require more than 24, so a flame retardant is required for building use. PolyFR, sold as Emerald Innovation 3000, FR-122P or GreenCrest depending on the producer, is not an SVHC and carries no restriction, unlike the HBCD it replaced. Foam grades and building fire classes are compared in full on flame retardants for polystyrene, EPS and XPS.

Polypropylene#

Polypropylene uses brominated flame retardants in two ways: DBDPE or EBTBP with antimony trioxide for UL 94 V-0, or FR-370 or TBBPA-DBPE for a V-2 rating in which flaming drips carry heat away from the flame front. Polypropylene has a limiting oxygen index of about 17.5 %, drips rather than chars, and forms no protective residue on its own, which is why the drip route is a viable strategy for the less demanding V-2 class. FR-370 is melt-blendable, UV-stable and does not bloom, and it is sold in masterbatches of 25-80 % active ingredient with a radical initiator according to patent literature. Halogen-free intumescent routes using ammonium polyphosphate are compared with these brominated systems on flame retardants for polypropylene.

Glass-filled polyamide (nylon) and PBT#

Glass-filled PA66 and PBT connectors use polymeric BFRs such as brominated polystyrene or poly(pentabromobenzyl acrylate) with antimony trioxide, because their high molecular weight survives the processing heat and does not bloom. FR-1025 carries supplier-reported benefits for thermal ageing resistance, high comparative tracking index and recyclability alongside its non-blooming behaviour, though these remain producer claims rather than independent test data. In PET, sodium antimonate typically replaces antimony trioxide as the synergist because it is less catalytically active toward the polyester's own polycondensation chemistry. Phosphinate and red-phosphorus alternatives are compared with these brominated systems on flame retardants for nylon.

Epoxy laminates (FR-4) and polycarbonate#

FR-4 printed circuit board laminates are a main reactive use of bromine in plastics: TBBPA is reacted into the epoxy backbone, which leaves free TBBPA well below 0.1 % according to the Oeko-Institut RoHS dossier. Brominated epoxy oligomers extend the same chemistry to PBT, PET, ABS and PC/ABS as an additive rather than a fully reactive system. DOPO-based laminates, a halogen-free route that reaches UL 94 V-0 at about 1 to 1.2 wt% phosphorus, are covered under flame retardants for epoxy resins.

Wire and cable compounds#

Wire and cable compounds use DBDPE or EBTBP with antimony trioxide where a halogenated system is accepted, while low-smoke zero-halogen (LSZH) cables replace them with 160-180 phr of aluminum trihydrate (ATH) or magnesium hydroxide (MDH). DBDPE is used particularly in automotive wire and cable, and EBTBP's UV stability suits outdoor polyolefin cable jacketing. CPR fire classes and LSZH loadings by cable type are covered under flame retardants for wire and cable.

Flexible PVC and polyurethane foam#

Flexible PVC and polyurethane foam use brominated flame-retardant plasticizers such as TBPH, and ECHA's plastic additives mapping lists TBBPA-DBMPE at a typical 15 wt% in PUR and flexible PVC. TBPH functions as part of Firemaster 550/BZ-54 type blends that combine flame retardancy with plasticizing action in the same molecule. PVC's own chlorine content already contributes some flame retardancy, which plasticizer dilution partly offsets, a relationship our sources record only qualitatively.

How Much Brominated Flame Retardant Does a Plastic Need?#

A plastic typically needs enough brominated flame retardant to deliver about 10 wt% bromine plus a few percent antimony trioxide for UL 94 V-0, which in HIPS means about 8-12 wt% DBDPE and 5 wt% Sb2O3. Flame retardants overall make up 2 to 28 wt% of a finished plastic product, and the required BFR dosage inside that range depends on four drivers.

• The target fire rating and part thickness: a thinner wall (for example 0.8 mm rather than 1.6 mm) needs a higher bromine loading to reach the same UL 94 class.
• The bromine content of the specific BFR grade: Saytex 8010 DBDPE carries at least 82 % bromine, so less of it is needed by weight than a lower-bromine grade for the same effect.
• The antimony trioxide (or alternative synergist) level, typically a few percent alongside the BFR.
• The base polymer's own burning behaviour: a dripping, non-charring polymer such as polypropylene needs a different strategy from a charring polymer such as epoxy.

Worked let-down example. A 60 wt% DBDPE masterbatch let down at 15 % into the base resin gives 9 wt% DBDPE in the finished part (0.60 x 15 % = 9 %). Using Saytex 8010's bromine content of at least 82 %, that 9 wt% DBDPE delivers about 7.4 wt% bromine in the part (9 % x 0.82 = 7.4 %). This is a calculation example only, not a specific supplier's product recommendation. Most compounders add DBDPE and Sb2O3 through a flame retardant masterbatch rather than dosing neat powders.

Matching polymer and target rating with the right BFR and loading is covered step by step in the flame retardant selector.

Table 3. Bromine content and thermal data

Supplier and PubChem data. "Not in verified data set" marks values our source library does not carry.

Are Brominated Flame Retardants Banned?#

Some brominated flame retardants are banned worldwide: the PBDEs (including decaBDE), hexabromobiphenyl and HBCD are listed for elimination under the Stockholm Convention, while DBDPE, TBBPA and most polymeric BFRs remain in use under SVHC, hazard or sector rules. Table 4 sets out the seven regulatory instruments that between them decide BFR legality, each with its own dates and limits. Furniture standards and UL/IEC test requirements sit alongside these chemical bans under flame retardant regulations.

Table 4. BFR regulatory matrix

Legacy BFRs under the Stockholm Convention and EU POPs rules: PBDEs and HBCD#

The PBDEs and HBCD are the brominated flame retardants the world has banned: tetra- to heptaBDE and hexabromobiphenyl were listed in Stockholm Convention Annex A in 2009, HBCD in 2013 and commercial decaBDE in 2017. Under the EU POPs Regulation, the sum of tetra- to decaBDE in mixtures and articles is limited to 10 mg/kg under Delegated Regulation (EU) 2025/1482, while recovered material carries transitional limits of 350 mg/kg from 30 December 2025 and 200 mg/kg from 30 December 2027; food-contact material is excluded from this regime. HBCD sits under REACH Annex XIV entry 3, with a sunset date of 21 August 2015, and under the EU POPs Regulation at a 100 mg/kg limit; EPS and XPS already installed in buildings before 21 February 2018 may remain in use under an expired exemption that applied only to new placement on the market. Japan banned HBCD in May 2014. Exemptions and limits per substance are tracked in full under POPs in plastics.

What does PBDE stand for?#

PBDE stands for polybrominated diphenyl ethers, the aromatic BFR family whose best-known member is decaBDE (BDE-209); all commercial PBDE mixtures, sold historically as penta-, octa- and decaBDE blends, are now listed under the Stockholm Convention.

EU: SVHC listings, CLP and the ABFR restriction#

The EU lists 7 brominated flame retardants as substances of very high concern and is preparing a group restriction of non-polymeric aromatic BFRs, with a draft restriction dossier planned for December 2026. Those 7 Candidate List entries are HBCD (28 Oct 2008, PBT), decaBDE (19 Dec 2012, PBT and vPvB), the DBNPG group with TBNPA and 2,3-dibromo-1-propanol (8 Jul 2021, carcinogenic), TBBPA (17 Jan 2023, carcinogenic), BTBPE and TBPH (both 17 Jan 2023, vPvB) and DBDPE (5 Nov 2025, vPvB). All 7 BFR entries appear in full on the site's SVHC Candidate List.

CLP classification adds a further layer: TBBPA has carried the harmonised classification Carc. 1B (H350) since 1 September 2025, under the 21st Adaptation to Technical Progress (Delegated Regulation (EU) 2024/197), while HBCD carries Repr. 2 (H361) and Lact. (H362).

ECHA's flame-retardant regulatory strategy, published in March 2023, identifies aromatic BFRs as candidates for restriction while placing aliphatic BFRs and organophosphorus flame retardants in a track that needs more data first. Its follow-up ABFR investigation report of 18 December 2024 found about 60 ABFRs potentially on the EU market, with more than 40 classified or likely to be classified PBT or vPvB, and identified no available alternatives for aerospace, certain sealants and adhesives, and transparent polycarbonate.

That strategy is now moving toward a formal restriction on a dated, though still unfinished, timeline.

1. 11 November 2025: the European Commission mandates ECHA to prepare a REACH restriction dossier for non-polymeric aromatic BFRs.
2. 21 January to 18 March 2026: ECHA runs a public call for evidence on the scope and impact of the planned restriction.
3. Scope under consideration: DBDPE, TBPH and BTBPE are named as mandated substances, with up to 21 further non-polymeric ABFRs under interim PBT or vPvB assessment and a broader option covering up to 24 substances across electrical and electronic equipment, construction products and textiles.
4. December 2026 (planned): ECHA is expected to submit a draft Annex XV restriction dossier; polymeric BFRs remain outside this restriction's scope throughout.

Each step of the restriction is tracked in full under EU restriction of aromatic brominated flame retardants.

Electronics rules: RoHS and the Ecodesign display ban#

RoHS limits only two brominated groups in electrical equipment, PBB and PBDE at 0.1 % each in any homogeneous material, but the EU Ecodesign Regulation (EU) 2019/2021 has banned every halogenated flame retardant in the enclosures and stands of electronic displays since 1 March 2021. The decaBDE exemption under RoHS was annulled in 2008, and a proposal to add TBBPA and medium-chain chlorinated paraffins to the RoHS restricted-substance list was dropped by the European Commission in 2024. The Ecodesign display ban has been upheld by the EU General Court. Exemptions and the dropped TBBPA proposal are covered in full under RoHS and plastic additives.

United States and Canada: TSCA, Proposition 65, state laws and PCTSR#

In the United States, decaBDE is prohibited under TSCA section 6(h) with a 0.1 wt% threshold for unintentional presence, while TBBPA is still under EPA risk evaluation (draft released 12 June 2026). The revised decaBDE rule was published 19 November 2024 (89 FR 91486) and took effect 21 January 2025; recycled plastic is excluded from the prohibition if no decaBDE was intentionally added to it, motor-vehicle replacement parts are allowed until end of service life or 2036, and nuclear-plant cable is allowed until end of service life. The US flame-retardant industry completed a voluntary decaBDE phase-out at the end of 2013. HBCD went through a final TSCA risk evaluation in September 2020, revised by determination in June 2022. Every risk evaluation for these substances is tracked on TSCA and plastic additives.

California's Proposition 65 lists antimony oxide for cancer (1 October 1990), DBNPG for cancer under its 2,2-bis(bromomethyl)-1,3-propanediol name (1 May 1996) and TBBPA for cancer (27 October 2017). These three listing dates were checked against the archived 2019 OEHHA list rather than a live pull, so no additional listings are implied beyond these three.

At state level, Washington banned certain PBDEs in 2011, the Chemical and Safer Products Act added five organohalogen flame retardants to its list in 2016 and a 2023 Safer Products rule covers electronic casings; New York has banned organohalogen flame retardants in the enclosures and stands of electronic displays since 1 January 2024; and California's AB 2998 restricts halogenated and organophosphorus flame retardants above 1,000 ppm in juvenile products, mattresses and upholstered furniture from 1 January 2020. Other states' rules are compared under US state laws on flame retardants.

Canada's Prohibition of Certain Toxic Substances Regulations, 2025 (SOR/2025-270) enter into force 30 June 2026 and set incidental PBDE limits of 1,000 mg/kg in electrical and electronic equipment, 500 mg/kg in other items and 10 mg/kg in substances, an HBCD limit of 100 mg/kg, and a new prohibition on DBDPE with permits and transitions available; no specific DBDPE limit value or transition date is confirmed in the verified record.

Are brominated flame retardants still used?#

Yes: DBDPE, TBBPA and the polymeric BFRs are still used in 2026, and DBDPE alone sits in the EU's 10,000-100,000 t/y REACH registration band, while the PBDEs and HBCD are banned. TBBPA continues as a reactive component in FR-4 laminates, and ECHA's own ABFR report found no identified alternatives for uses such as aerospace, certain sealants and adhesives, and transparent polycarbonate.

How Do Brominated Flame Retardants Affect Plastic Recycling?#

Brominated flame retardants complicate plastic recycling because legacy PBDEs and HBCD stay in the plastic for decades, so recyclers of electronics and building plastics must keep recovered material below 350 mg/kg PBDEs in the EU since 30 December 2025. Bromine's chemical stability, the same property that makes a BFR effective in a fire, means the element is often recycled together with its parent polymer rather than being removed during reprocessing, according to the US Geological Survey. The EU POPs Regulation applies specific transitional limits to recovered material.

• 500 mg/kg PBDEs applied to recovered material at the moment Delegated Regulation (EU) 2025/1482 entered into force.
• 350 mg/kg PBDEs applies to recovered material from 30 December 2025.
• 200 mg/kg PBDEs applies to recovered material from 30 December 2027, and toys and childcare articles made from recovered material face a separate 10 mg/kg limit from 17 May 2027.

In the United States, TSCA's decaBDE rule excludes recycled plastic from the prohibition where no decaBDE was intentionally added, which shifts the compliance burden toward testing and sourcing rather than an outright ban on recyclate.

Guzzonato, Puype and Harrad (University of Birmingham), 2017, found bromine in 61 % of toys, food-contact articles and waste electrical and electronic equipment (WEEE) samples tested, and 45 % of the bromine-positive samples exceeded PBDE limits, a pattern the study traced to recycled electronics-grade ABS entering unrelated product streams. Sorting and screening methods for keeping legacy BFRs out of new products are covered under legacy additives in recycled plastic.

No reprocessing step currently separates individual BFR molecules from a polymer melt, so once decaBDE, DBDPE or HBCD is compounded into a part, screening and blending decisions made at the recycling stage, not chemical removal, are what keep recovered material under the EU's PBDE limits. That constraint places the practical burden on sorting technology and on which waste streams a recycler chooses to accept.

Because legacy BFRs cannot be reliably removed once they are inside a polymer, design and sourcing decisions made when a plastic is first formulated determine whether it can later be recycled cleanly. Restabilization and compatibilization strategies for BFR-affected recyclate are covered on additives for recycled plastics.

What Replaces Brominated Flame Retardants?#

Brominated flame retardants are replaced either by other brominated products, mainly polymeric BFRs, or by halogen-free systems such as aluminium diethylphosphinate in polyamide, intumescent ammonium polyphosphate in polypropylene and ATH or MDH in cables. Every non-halogen class is compared with brominated systems in full under halogen-free flame retardants.

Table 5. BFR replacements by use

Substitution has clear limits. The decaBDE-to-DBDPE-to-polymeric chain is itself an example of regrettable substitution, since DBDPE became an SVHC only a decade or so after replacing decaBDE. ECHA's ABFR investigation report identified no available alternative for certain aerospace applications, some sealants and adhesives, and transparent polycarbonate. The EU FP7 project ENFIRO, concluded in 2012, found that ammonium polyphosphate, aluminium diethylphosphinate, ATH, MDH, melamine polyphosphate, DOPO, zinc stannate and zinc hydroxystannate showed good overall profiles as alternatives, while resorcinol and bisphenol A bis(diphenyl phosphate) in styrenics produced more smoke than the brominated systems they replaced.

Which Fire Tests Measure Brominated Flame Retardant Performance?#

Brominated flame retardant performance is measured mainly by the UL 94 vertical burn test, the limiting oxygen index, the glow-wire tests for electrical parts and the cone calorimeter.

UL 94 flammability ratings#

Table 6. UL 94 ratings and criteria

UL 94 V-0, the rating most BFR systems target, requires every afterflame to stop within 10 seconds, all afterflames of 5 specimens to total no more than 50 seconds, and no flaming drips that ignite the cotton below. These criteria are harmonised internationally with IEC 60695-11-10 and -11-20 and with ISO 9772 and 9773. Test set-up and specimen conditioning are described on the site's UL 94 flammability ratings page.

Limiting oxygen index (LOI), glow wire and cone calorimeter#

The limiting oxygen index (ISO 4589-2, ASTM D2863) gives the minimum oxygen share that sustains candle-like burning, and unmodified polypropylene sits at about 17.5 %, below the 20.9 % oxygen present in ordinary air. A common claim that "LOI above 21 means self-extinguishing" is misleading marketing rather than a technical rule, since real fires rarely burn under still-air, candle-like conditions. Glow-wire tests (GWFI and GWIT, IEC 60695-2-12 and -2-13, applied to complete appliances under IEC 60335-1) assess ignition resistance from a heated wire contact, the comparative tracking index (CTI, IEC 60112) is a frequent trade-off point between flame retardancy and electrical tracking resistance in FR-PA and FR-PBT grades, and the cone calorimeter (ISO 5660-1, ASTM E1354) measures heat release rate, peak heat release rate and total heat release under a controlled external heat flux. Typical LOI values by polymer are listed in full under limiting oxygen index.

Who Makes Brominated Flame Retardants?#

Brominated flame retardants are made mainly by Albemarle (Saytex), ICL Industrial Products (FR series) and LANXESS (Emerald Innovation, Firemaster), the three bromine producers named by the US Geological Survey.

Table 7. BFR producers and brands

Plants, grades and certifications by company are listed in the directory of flame retardant manufacturers and suppliers. Buyers should compare BFR grades by CAS number, bromine content and SVHC status, not by trade name, since several producers sell chemically distinct products under similar-sounding brand names.

Send one request to several BFR producers with the plastic additive supplier finder.

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Are Brominated Flame Retardants Harmful?#

Several brominated flame retardants carry formal hazard findings: the EU classifies TBBPA as a presumed human carcinogen (Carc. 1B) from 1 September 2025 and HBCD as suspected of damaging fertility, while decaBDE, DBDPE, BTBPE and TBPH are listed for persistence and bioaccumulation. These are regulatory classifications under CLP and REACH rather than population-level risk assessments, and exposure studies that quantify actual human intake are summarised in full under flame retardants and human health.

Hazard classifications of brominated flame retardants#

The 5 hazard findings that matter most for BFR users are listed below.

• TBBPA: harmonised Carc. 1B (H350) from 1 September 2025 (21st ATP), plus Aquatic Acute 1 (H400) and Aquatic Chronic 1 (H410); IARC Group 2A; California Proposition 65 cancer listing since 2017.
• HBCD: harmonised Repr. 2 (H361) and Lact. (H362) under CLP index 602-109-00-4.
• DecaBDE: SVHC for PBT and vPvB properties; no harmonised CLP hazard entry has been found in the verified record.
• The DBNPG group (with TBNPA and 2,3-dibromo-1-propanol): SVHC for carcinogenicity since 2021; DBNPG itself has carried a California Proposition 65 cancer listing since 1996.
• Antimony trioxide, the usual BFR synergist: harmonised Carc. 2 (H351); IARC Group 2A for trivalent antimony.

Brominated flame retardants in consumer products and the environment#

Brominated flame retardants reach consumer products mainly through recycled electronics plastic: a 2017 University of Birmingham study by Guzzonato, Puype and Harrad found bromine in 61 % of toys, food-contact articles and electronics samples tested. Liu et al. (2024, with a 2025 corrigendum) examined 203 black household products and found total flame-retardant concentrations up to 22,800 mg/kg, with a median estimated BDE-209 intake from kitchen utensils of 34,700 ng per day, though the study's original comparison to a reference dose was corrected in the later corrigendum. Persistence, the same property that made HBCD, decaBDE and the other PBDEs effective for decades in service, is the reason all of them were eventually listed as POPs.

A short history of brominated flame retardants#

The history of brominated flame retardants runs from decaBDE's peak world demand of 56,100 t in 2001 to its Stockholm listing in 2017, with DBDPE and polymeric BFRs taking over the same uses.

1. 1988: room-scale fire tests by the US National Bureau of Standards found that flame-retarded products gave more than 15 times the available escape time and about one quarter of the heat release of non-flame-retarded equivalents.
2. 2001: world demand for decaBDE peaks at 56,100 t.
3. 1990s onward: DBDPE is commercialised as the decaBDE substitute; China alone produced about 230,000 t between 2006 and 2016, of which about 39,000 t left the country embedded in finished appliances.
4. 2008-2017: RoHS's decaBDE exemption is annulled (2008), the US flame-retardant industry completes a voluntary decaBDE phase-out (end 2013), and decaBDE is listed under the Stockholm Convention (2017).
5. 2009-2013: HBCD production runs at about 28,000 t per year before its 2013 Stockholm Convention listing, after which PolyFR takes over its main EPS and XPS insulation role.

BFRs are one chapter in the history of plastic additives, which traces flame retardancy back through mineral and phosphorus chemistry as well.

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