4,4'-Bis(bromomethyl)biphenyl

Also known as: 4,4'-Bis(bromomethyl)-1,1'-biphenyl, 1,1'-Biphenyl, 4,4'-bis(bromomethyl)-, α,α′-Dibromo-p,p′-bitolyl, 4,4'-Dibromodimethylbiphenyl, 4,4'-bis (bromomethyl)-biphenyl

4,4'-Bis(bromomethyl)biphenyl (CAS 20248-86-6) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C14H12Br2 and a molecular weight of 340.053 g/mol. Key properties include a melting point of 171°C, a boiling point of 399.8±37.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 228.9±25.7 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H314 — Causes severe skin burns and eye damage and H410 — Very toxic to aquatic life with long lasting effects. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 20248-86-6
Jingsj CID: J-1991120-7
Molecular Formula: C₁₄H₁₂Br₂
Molecular Weight: 340.053 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	171°C
Boiling Point	399.8±37.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	228.9±25.7 °C
Exact Mass	337.930573
LogP	5.38
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.631

GHS Safety & Compliance

Corrosion / Irritant / Environmental HazardSignal word: Danger

H302 — Harmful if swallowed
H314 — Causes severe skin burns and eye damage
H410 — Very toxic to aquatic life with long lasting effects

Customs & Trade Information

HS Code	2903999090
Summary	2903999090 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 4,4'-Bis(bromomethyl)biphenyl?

The CAS number of 4,4'-Bis(bromomethyl)biphenyl is 20248-86-6.

What are the molecular formula and molecular weight of 4,4'-Bis(bromomethyl)biphenyl?

4,4'-Bis(bromomethyl)biphenyl has molecular formula C14H12Br2 and molecular weight 340.053 g/mol.

Is 4,4'-Bis(bromomethyl)biphenyl hazardous?

4,4'-Bis(bromomethyl)biphenyl has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H314 — Causes severe skin burns and eye damage; H410 — Very toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of 4,4'-Bis(bromomethyl)biphenyl?

For 4,4'-Bis(bromomethyl)biphenyl, Upstream Products: 4,4'-Biphenyldiyldimethanol, BI-P-TOLYL, Formaldehyde; Downstream Products: Biphenyl-4,4'-dicarboxylic acid, 4,4'-Biphenyldicarboxaldehyde, 1,1'-[Biphenyl-4,4'-diylbis(methylene)]bis(4,4'-bipyridinium) bis(hexafluorophosphate).

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. "4,4'-Bis(bromomethyl)biphenyl (CAS 20248-86-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1991120-7 (accessed 2026-11-09).

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