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

Also known as: PCB 134, BZNO 134, 1,2,4,5-tetrachloro-3-(2,3-dichlorophenyl)benzene, 2,2',3,3',5,6-Hexachloro-1,1'-biphenyl

2,2',3,3',5,6-Hexachlorobiphenyl (CAS 52704-70-8) 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 100°C, a boiling point of 387.4ºC at 760 mmHg, a density of 1.593 g/cm3 and a flash point of 186.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
52704-70-8
Jingsj CID
J-977958-2
Molecular Formula
C12H4Cl6
Molecular Weight
360.87800 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point100°C
Boiling Point387.4ºC at 760 mmHg
Density1.593 g/cm3
Flash Point186.7ºC
Exact Mass357.84400
LogP7.27400
Refractive Index1.626

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',3,3',5,6-Hexachlorobiphenyl?

The CAS number of 2,2',3,3',5,6-Hexachlorobiphenyl is 52704-70-8.

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

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

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',3,3',5,6-Hexachlorobiphenyl (CAS 52704-70-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-977958-2 (accessed 2026-11-09).

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