The workhorse of modern brominated flame retardancy: ~82% bromine in a molecule built to replace banned decaBDE — same efficiency class, higher thermal and UV stability, and outside the PBDE restriction lists. Supplied as powder and pre-synergized packages with antimony trioxide for PP, PE, HIPS, ABS, PBT, PA and wire & cable.
Fig. DB01 — brominated additive & UL94 barsDBDPE-based compound specimens after vertical burn testing.
Decabromodiphenyl ethane is decaBDE’s legal successor: swap the ether oxygen for an ethane bridge and the molecule leaves the PBDE family entirely — keeping the ten bromines and the efficiency, dropping the restriction baggage. That one-atom difference is why the market migrated here.
Same bromine count and application map as the banned legacy molecule, without PBDE classification — the drop-in path for formulations that had to leave decaBDE behind.
Decomposition onset above ~330 °C means DBDPE survives PBT and PA processing where lesser bromine sources gas out — and it resists the UV yellowing that plagued older grades.
Like every bromine source, DBDPE performs with antimony trioxide at roughly 3:1 Br:Sb — and takes zinc borate substitution where antimony cost or scrutiny bites.
Classic gas-phase bromine chemistry — the flame is poisoned, not smothered.
In the flame zone DBDPE releases bromine species that convert to HBr — timed by its high decomposition onset to match engineering-plastic burn conditions.
HBr scavenges the H• and OH• radicals that drive combustion — the chain reaction stalls and the flame self-extinguishes.
Antimony trioxide converts the bromine into volatile antimony halides that carry it deeper into the flame — the synergy that reaches V-0 at total loadings mineral systems cannot approach.
Wherever a halogen-tolerant spec wants V-0 at the lowest total loading — from commodity polyolefins to glass-filled engineering plastics.
| Polymer | Typical DBDPE Loading | Package | Key Targets | Related Page |
|---|---|---|---|---|
| PP / PE | 8–15% | + Sb₂O₃ ~3:1 | UL94 V-2 / V-0 at low cost | FR polyethylene guide |
| HIPS / ABS | 12–18% | + Sb₂O₃, anti-drip | UL94 V-0 @ 1.6 mm, E&E housings | FR ABS |
| PBT / PA (glass-filled) | 14–20% | + Sb₂O₃, thermal stabilizers | V-0 on GF grades; survives 250–300 °C melt | FR PBT guide |
| Wire & cable (halogen-tolerant) | 10–18% | + Sb₂O₃ / ZB blends | Jacket flame ratings where LSZH is not required | FR PVC cable guide |
| Elastomers & TPE | 10–16% | + Sb₂O₃ | Industrial parts, halogen-tolerant specs | — |
Buyers still ask for “deca” — the answer matters at customs. Same performance class, different molecule, different legal status.
The compliant workhorse — an ethane bridge keeps it outside the PBDE family.
The banned legacy — an ether link makes it a PBDE, with everything that follows.
The molecule is standard; the package around it is where compounds pass or fail — ratio, stabilization, dispersion and drip control are formulation work.
We supply DBDPE as powder and as pre-synergized packages — antimony ratio dialed for your resin, anti-drip included where V-0 demands it, antimony-lean variants with zinc borate on request. Every package ships with third-party regulated-substance test reports, because brominated chemistry gets audited.
Fig. DB02 — burn verification at our partner factory’s labEvery Br:Sb ratio is burn-tested before we quote it.
Fig. DB03 — export packagingBags, big bags and palletized supply for overseas buyers.Two questions come up on every DBDPE enquiry: why quotes differ so much, and whether it is still a safe thing to design around. Straight answers to both.
| The Question | The Answer |
|---|---|
| Why is that other quote cheaper? | Usually bromine content, particle size or whether antimony synergist is included in the comparison. Normalise quotes on active bromine and ask for the particle size distribution before ranking them. |
| How much antimony do I need with it? | The usual bromine-to-antimony ratio is around 3:1. If antimony cost is the problem, zinc borate replaces a large share of it before you consider leaving brominated chemistry at all. |
| Is DBDPE legal? | Yes, and fully RoHS compliant — RoHS restricts only PBB and PBDE. It is the mainstream replacement for banned PBDE grades. |
| Will it stay legal? | This is where we will be blunt. DBDPE is a non-polymeric aromatic additive, which is exactly the profile ECHA is preparing a restriction dossier on. Nothing is prohibited today, but it carries the most regulatory horizon of anything in our range. |
What we would advise, depending on your cycle. If your product turns over quickly, DBDPE remains the most cost-effective route to V-0 in ABS and HIPS and the risk is commercial rather than technical. If you carry multi-year certification cycles, get a halogen-free package qualified in parallel now — not to switch today, but so that switching later is a decision rather than an emergency. Any supplier telling you DBDPE has no regulatory horizon is either not reading the files or hoping you are not.
Direct answers for formulators and procurement evaluating decabromodiphenyl ethane before sampling.
Decabromodiphenyl ethane — a brominated flame retardant with ~82% bromine, built as the non-PBDE successor to banned decaBDE. An ethane bridge replaces the ether link, taking it out of the PBDE family while keeping the ten-bromine efficiency.
No. decaBDE is restricted under RoHS and the EU POPs Regulation as a PBDE; DBDPE is chemically distinct and outside those lists. It does sit within ECHA’s ongoing aromatic-BFR review, so monitor its status when designing long-lifecycle products.
Typically 8–15% in polyolefins and 12–20% in styrenics and glass-filled engineering plastics, always with antimony trioxide near a 3:1 Br:Sb ratio and PTFE anti-drip where V-0 requires it. The exact ladder depends on wall thickness — we burn-test before quoting.
Both serve glass-filled engineering plastics. DBDPE offers the higher bromine content per kilogram; polymeric brominated polystyrene wins where migration resistance and electrical properties lead. We quote both routes with the trade-off math for your part.
Send your resin, UL94 class and wall thickness, color/UV requirements and destination market. We will design the Br:Sb package — conventional or antimony-lean — and prove it at our partner factory’s burn lab with the compliance paperwork your customs will ask for. If the number on the quote is what you are really trying to understand, the feedstock behind it is broken down in decabromodiphenyl ethane price.