4-bromodiphenyl ether

Also known as: 4-Bromophenoxybenzene, 1-Bromo-4-phenoxybenzene, 4-Bromophenyl phenyl ether, p-Bromophenyl phenyl ether, p-Bromodiphenyl ether, p-Phenoxybromobenzene, Phenyl (4-bromophenyl) ether, 4-Bromophenyl phenylether, Benzene, 1-bromo-4-phenoxy-, p-Bromophenoxybenzene, para-bromophenoxybenzene

4-bromodiphenyl ether (CAS 101-55-3) is a compound in the Ethers category listed in the Jingsj chemical database. It has the molecular formula C12H9BrO and a molecular weight of 249.103 g/mol. Key properties include a melting point of 18 °C(lit.), a boiling point of 310.1±0.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 118.4±21.0 °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.: 101-55-3
Jingsj CID: J-3073-3
Molecular Formula: C₁₂H₉BrO
Molecular Weight: 249.103 g/mol
Category: Ethers
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	18 °C(lit.)
Boiling Point	310.1±0.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	118.4±21.0 °C
Exact Mass	247.983673
PSA	9.23000
LogP	5.11
Vapor Pressure	0.0±0.6 mmHg at 25°C
Refractive Index	1.601

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 Code	2909309090
Summary	2909309090 other aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives 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 4-bromodiphenyl ether?

The CAS number of 4-bromodiphenyl ether is 101-55-3.

What are the molecular formula and molecular weight of 4-bromodiphenyl ether?

4-bromodiphenyl ether has molecular formula C12H9BrO and molecular weight 249.103 g/mol.

Is 4-bromodiphenyl ether hazardous?

4-bromodiphenyl 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 4-bromodiphenyl ether?

For 4-bromodiphenyl ether, Upstream Products: Iodobenzene, 4-Bromophenol, Bromobenzene; Downstream Products: 4-Phenoxybenzenethiol, 4-Phenoxystyrene, 2,4'-dibromodiphenyl ether.

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. "4-bromodiphenyl ether (CAS 101-55-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3073-3 (accessed 2026-11-07).

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