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2,2',3,5,5',6-Hexachlorobiphenyl

Also known as: 2,2',3,5,5',6-Hexachlorobiphenyl, PCB 151, BZNO 151, CB 151, 1,1'-Biphenyl, 2,2',3,5,5',6-hexachloro-

2,2',3,5,5',6-Hexachlorobiphenyl (CAS 52663-63-5) 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 360.87800 g/mol. Key properties include a melting point of 101°C, a boiling point of 383.7ºC at 760 mmHg, a density of 1.593 g/cm3 and a flash point of 183.9ºC. 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.
52663-63-5
Jingsj CID
J-977789-3
Molecular Formula
C12H4Cl6
Molecular Weight
360.87800 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point101°C
Boiling Point383.7ºC at 760 mmHg
Density1.593 g/cm3
Flash Point183.9ºC
Exact Mass357.84400
LogP7.27400
Refractive Index1.626

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

Customs & Trade Information

HS Code2903999090
Summary2903999090 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 2,2',3,5,5',6-Hexachlorobiphenyl?

The CAS number of 2,2',3,5,5',6-Hexachlorobiphenyl is 52663-63-5.

What are the molecular formula and molecular weight of 2,2',3,5,5',6-Hexachlorobiphenyl?

2,2',3,5,5',6-Hexachlorobiphenyl has molecular formula C12H4Cl6 and molecular weight 360.87800 g/mol.

Is 2,2',3,5,5',6-Hexachlorobiphenyl hazardous?

2,2',3,5,5',6-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.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2,2',3,5,5',6-Hexachlorobiphenyl (CAS 52663-63-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-977789-3 (accessed 2026-11-09).

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