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2,4,4'-Trichlorobiphenyl

Also known as: 2,4,4'-Trichloro-1,1'-biphenyl, PCB 28, PCB No. 28, PCB-28, 2,4,4'-Trichlorobiphenyl

2,4,4'-Trichlorobiphenyl (CAS 7012-37-5) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H7Cl3 and a molecular weight of 257.54300 g/mol. Key properties include a melting point of 206-207℃, a boiling point of 330.3ºC at 760 mmHg, a density of 1.351g/cm3 and a flash point of 100ºC. 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.
7012-37-5
Jingsj CID
J-1264-6
Molecular Formula
C12H7Cl3
Molecular Weight
257.54300 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Melting Point206-207℃
Boiling Point330.3ºC at 760 mmHg
Density1.351g/cm3
Flash Point100ºC
Exact Mass255.96100
LogP5.31380
Refractive Index1.603
Storage Conditions2-8°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
  • H373 — May cause damage to organs through prolonged exposure
  • H410 — Very toxic to aquatic life with long lasting effects

Frequently Asked Questions

What is the CAS number of 2,4,4'-Trichlorobiphenyl?

The CAS number of 2,4,4'-Trichlorobiphenyl is 7012-37-5.

What are the molecular formula and molecular weight of 2,4,4'-Trichlorobiphenyl?

2,4,4'-Trichlorobiphenyl has molecular formula C12H7Cl3 and molecular weight 257.54300 g/mol.

Is 2,4,4'-Trichlorobiphenyl hazardous?

2,4,4'-Trichlorobiphenyl 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:

How to cite: Jingsj. "2,4,4'-Trichlorobiphenyl (CAS 7012-37-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1264-6 (accessed 2026-11-09).

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