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2,3',4,4'-Tetrabromodiphenyl ether

Also known as: PBDE 66, 2,3',4,4'-TetraBDE, BDE 66, 1,2-Dibromo-4-(2,4-dibromophenoxy)benzene, Benzene, 1,2-dibromo-4-(2,4-dibromophenoxy)-

2,3',4,4'-Tetrabromodiphenyl ether (CAS 189084-61-5) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C12H6Br4O and a molecular weight of 485.791 g/mol. Key properties include a boiling point of 414.4±45.0 °C at 760 mmHg, a density of 2.2±0.1 g/cm3 and a flash point of 171.3±27.2 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H304 and H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
189084-61-5
Jingsj CID
J-1499016-0
Molecular Formula
C12H6Br4O
Molecular Weight
485.791 g/mol
Category
Ethers
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point414.4±45.0 °C at 760 mmHg
Density2.2±0.1 g/cm3
Flash Point171.3±27.2 °C
Exact Mass481.715179
PSA9.23000
LogP7.47
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.665

GHS Safety & Compliance

Flammable / Irritant / Health Hazard / Environmental HazardSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H304
  • H315 — Causes skin irritation
  • H336 — May cause drowsiness or dizziness
  • H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of 2,3',4,4'-Tetrabromodiphenyl ether?

The CAS number of 2,3',4,4'-Tetrabromodiphenyl ether is 189084-61-5.

What are the molecular formula and molecular weight of 2,3',4,4'-Tetrabromodiphenyl ether?

2,3',4,4'-Tetrabromodiphenyl ether has molecular formula C12H6Br4O and molecular weight 485.791 g/mol.

Is 2,3',4,4'-Tetrabromodiphenyl ether hazardous?

2,3',4,4'-Tetrabromodiphenyl ether has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H304; H315 — Causes skin irritation.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2,3',4,4'-Tetrabromodiphenyl ether (CAS 189084-61-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1499016-0 (accessed 2026-11-07).

Data for reference only; verify product details with suppliers before purchase.