2,3,3',4,4',5,5',6-octabromodiphenyl ether

Also known as: BDE 205, BDE-205, PBDE 205, Octabromodiphenyl ether 205, 1,2,3,4,5-pentabromo-6-(3,4,5-tribromophenoxy)benzene, 2,3,3',4,4',5,5',6-OctaBDE

2,3,3',4,4',5,5',6-octabromodiphenyl ether (CAS 446255-56-7) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C12H2Br8O and a molecular weight of 801.376 g/mol. Key properties include a boiling point of 540.2±50.0 °C at 760 mmHg, a density of 2.8±0.1 g/cm3 and a flash point of 227.1±28.6 °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.: 446255-56-7
Jingsj CID: J-1106019-8
Molecular Formula: C₁₂H₂Br₈O
Molecular Weight: 801.376 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	540.2±50.0 °C at 760 mmHg
Density	2.8±0.1 g/cm3
Flash Point	227.1±28.6 °C
Exact Mass	793.357178
PSA	9.23000
LogP	10.12
Vapor Pressure	0.0±1.4 mmHg at 25°C
Refractive Index	1.719
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 2,3,3',4,4',5,5',6-octabromodiphenyl ether?

The CAS number of 2,3,3',4,4',5,5',6-octabromodiphenyl ether is 446255-56-7.

What are the molecular formula and molecular weight of 2,3,3',4,4',5,5',6-octabromodiphenyl ether?

2,3,3',4,4',5,5',6-octabromodiphenyl ether has molecular formula C12H2Br8O and molecular weight 801.376 g/mol.

Is 2,3,3',4,4',5,5',6-octabromodiphenyl ether hazardous?

2,3,3',4,4',5,5',6-octabromodiphenyl 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. "2,3,3',4,4',5,5',6-octabromodiphenyl ether (CAS 446255-56-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1106019-8 (accessed 2026-11-06).

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