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3,3',4,4'-tetrabromodiphenyl ether

Also known as: BDE 77, PBDE 77, 1,1'-oxybis[3,4-dibromobenzene], 1,2-dibromo-4-(3,4-dibromophenoxy)benzene, 3,3',4,4'-tetrabromodiphenyl ether (BDE 77), 3,3',4,4'-tetrabromo diphenyl ether

3,3',4,4'-tetrabromodiphenyl ether (CAS 93703-48-1) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C12H6Br4O and a molecular weight of 485.79100 g/mol. Key properties include a boiling point of 434.057ºC at 760 mmHg, a density of 2.161g/cm3 and a flash point of -12ºC. 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.
93703-48-1
Jingsj CID
J-1501454-0
Molecular Formula
C12H6Br4O
Molecular Weight
485.79100 g/mol
Category
Ethers
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point434.057ºC at 760 mmHg
Density2.161g/cm3
Flash Point-12ºC
Exact Mass481.71500
PSA9.23000
LogP6.52890
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

Customs & Trade Information

HS Code2903999090
Summary2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

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

The CAS number of 3,3',4,4'-tetrabromodiphenyl ether is 93703-48-1.

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

3,3',4,4'-tetrabromodiphenyl ether has molecular formula C12H6Br4O and molecular weight 485.79100 g/mol.

Is 3,3',4,4'-tetrabromodiphenyl ether hazardous?

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

What are the upstream and downstream products of 3,3',4,4'-tetrabromodiphenyl ether?

For 3,3',4,4'-tetrabromodiphenyl ether, Upstream Products: 3-Bromophenol, 3,4-dibromoaniline, 3,3'-Oxydianiline.

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

Last updated:

How to cite: Jingsj. "3,3',4,4'-tetrabromodiphenyl ether (CAS 93703-48-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1501454-0 (accessed 2026-11-07).

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