2,2',3,4,4',5'-Hexachlorobiphenyl

Also known as: PCB 138, 2,2',3,4,4',5'-Hexachloro-1,1'-biphenyl, 1,1'-Biphenyl,2,2',3,4,4',5'-hexachloro-, 2,4,5,2',3',4'-Hexachlorobiphenyl, 1,2,3-Trichloro-4-(2,4,5-trichlorophenyl)benzene, BCR296_FLUKA, PCB No 138

2,2',3,4,4',5'-Hexachlorobiphenyl (CAS 35065-28-2) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H4Cl6 and a molecular weight of 360.878 g/mol. Key properties include a melting point of 80°C, a boiling point of 400.0±37.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 196.0±23.9 °C. It is classified under GHS with signal word Warning and hazard statements H373 — May cause damage to organs through prolonged exposure 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.: 35065-28-2
Jingsj CID: J-36392-8
Molecular Formula: C₁₂H₄Cl₆
Molecular Weight: 360.878 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	80°C
Boiling Point	400.0±37.0 °C at 760 mmHg
Density	1.6±0.1 g/cm3
Flash Point	196.0±23.9 °C
Exact Mass	357.844421
LogP	6.78
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.627
Storage Conditions	2-8°C

GHS Safety & Compliance

Health Hazard / Environmental HazardSignal word: Warning

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 2,2',3,4,4',5'-Hexachlorobiphenyl?

The CAS number of 2,2',3,4,4',5'-Hexachlorobiphenyl is 35065-28-2.

What are the molecular formula and molecular weight of 2,2',3,4,4',5'-Hexachlorobiphenyl?

2,2',3,4,4',5'-Hexachlorobiphenyl has molecular formula C12H4Cl6 and molecular weight 360.878 g/mol.

Is 2,2',3,4,4',5'-Hexachlorobiphenyl hazardous?

2,2',3,4,4',5'-Hexachlorobiphenyl has GHS signal word Warning and hazard statements H373 — May cause damage to organs through prolonged exposure; H410 — Very toxic to aquatic life with long lasting effects.

What are the upstream and downstream products of 2,2',3,4,4',5'-Hexachlorobiphenyl?

For 2,2',3,4,4',5'-Hexachlorobiphenyl, Upstream Products: 2,4,5-Trichloroaniline, 1,2,4-Trichlorobenzene, 1,2,3-Trichlorobenzene.

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. "2,2',3,4,4',5'-Hexachlorobiphenyl (CAS 35065-28-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36392-8 (accessed 2026-11-09).

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