2,2',4,4',6-Pentabromodiphenyl ether

Also known as: 2,2',4,4',6-Pentabromodiphenyl ether, BDE 100, PBDE 100, 1,3,5-Tribromo-2-(2,4-dibromophenoxy)benzene, BDE No 100, 2,2',4,4',6-PentaBDE

2,2',4,4',6-Pentabromodiphenyl ether (CAS 189084-64-8) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C12H5Br5O and a molecular weight of 564.688 g/mol. Key properties include a melting point of -107°C (lit.), a boiling point of 415.9±45.0 °C at 760 mmHg, a density of 2.3±0.1 g/cm3 and a flash point of 171.9±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.: 189084-64-8
Jingsj CID: J-1418588-5
Molecular Formula: C₁₂H₅Br₅O
Molecular Weight: 564.688 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	-107°C (lit.)
Boiling Point	415.9±45.0 °C at 760 mmHg
Density	2.3±0.1 g/cm3
Flash Point	171.9±27.2 °C
Exact Mass	559.625671
PSA	9.23000
LogP	8.03
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.681
Storage Conditions	2-8°C

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 2,2',4,4',6-Pentabromodiphenyl ether?

The CAS number of 2,2',4,4',6-Pentabromodiphenyl ether is 189084-64-8.

What are the molecular formula and molecular weight of 2,2',4,4',6-Pentabromodiphenyl ether?

2,2',4,4',6-Pentabromodiphenyl ether has molecular formula C12H5Br5O and molecular weight 564.688 g/mol.

Is 2,2',4,4',6-Pentabromodiphenyl ether hazardous?

2,2',4,4',6-Pentabromodiphenyl 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: 8/21/2026

How to cite: Jingsj. "2,2',4,4',6-Pentabromodiphenyl ether (CAS 189084-64-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1418588-5 (accessed 2026-11-06).

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