4,4'-Dichlorobiphenyl

Also known as: 1,1'-Biphenyl, 4,4'-dichloro-, 1,1'-Biphenyl,4,4'-dichloro, 1,1’-biphenyl,4,4’-dichloro-, 1-chloro-4-(4-chlorophenyl)benzene, 4,4'-DICHLOROBIPHENYL, 4,4'-Dichloro-1,1'-biphenyl, 4,4'-Dichloro-biphenyl, 4,4'-Dichlorobiphenyl, 4,4'-dichlorobiphenyl, 4,4μ-Dichlorobiphenyl, 4,4μ-PCB, 4,4’-dichloro-1,1’-biphenyl, 4,4’-dichloro-1’-biphenyl, 4,4’-dichloro-bipheny, 4.4'-Dichlorobiphenyl, Biphenyl, 4,4'-dichloro-, Biphenyl,4,4'-dichloro, EINECS 218-095-4, MFCD00013641, PCB 15

4,4'-Dichlorobiphenyl (CAS 2050-68-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H8Cl2 and a molecular weight of 223.098 g/mol. Key properties include a melting point of 288℃, a boiling point of 318.0±17.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 145.2±14.5 °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.: 2050-68-2
Jingsj CID: J-1027114-4
Molecular Formula: C₁₂H₈Cl₂
Molecular Weight: 223.098 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	288℃
Boiling Point	318.0±17.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	145.2±14.5 °C
Exact Mass	222.000305
LogP	5.12
Vapor Pressure	0.0±0.7 mmHg at 25°C
Refractive Index	1.594

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
H373 — May cause damage to organs through prolonged exposure
H410 — Very toxic to aquatic life with long lasting effects

Customs & Trade Information

HS Code	2903999010
Summary	2903999010 2,3,3',4,5,6-hexachloro-1,1'-biphenyl。supervision conditions:89(articles on the list of prohibited export goods,articles on the list of prohibited import goods)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:5.5%。general tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4,4'-Dichlorobiphenyl?

The CAS number of 4,4'-Dichlorobiphenyl is 2050-68-2.

What are the molecular formula and molecular weight of 4,4'-Dichlorobiphenyl?

4,4'-Dichlorobiphenyl has molecular formula C12H8Cl2 and molecular weight 223.098 g/mol.

Is 4,4'-Dichlorobiphenyl hazardous?

4,4'-Dichlorobiphenyl 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. "4,4'-Dichlorobiphenyl (CAS 2050-68-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1027114-4 (accessed 2026-11-09).

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