1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin

Also known as: 1,2,3,4,7,8-HxCDD, 1,2,3,4,7,8-H6CDD, 1,2,3,4,7,8-Hexachlorodibenzodioxin, 1,2,3,4,7,8-Hexachlorooxanthrene, PCDD 66, D 66, Dibenzo-p-dioxin, 1,2,3,4,7,8-hexachloro-

1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin (CAS 39227-28-6) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C12H2Cl6O2 and a molecular weight of 390.86100 g/mol. Key properties include a boiling point of 474.8ºC at 760mmHg, a density of 1.777g/cm3 and a flash point of 181.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 39227-28-6
Jingsj CID: J-1004335-3
Molecular Formula: C₁₂H₂Cl₆O₂
Molecular Weight: 390.86100 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	474.8ºC at 760mmHg
Density	1.777g/cm3
Flash Point	181.4ºC
Exact Mass	387.81900
PSA	18.46000
LogP	7.50500
Refractive Index	1.666

Customs & Trade Information

HS Code	2932999060
Summary	2932999060. Dioxin,Furan(polychorinated dibenzo-p-dioxines,polychlorinated dibenzofurans). VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:89(articles on the list of prohibited export goods,articles on the list of prohibited import goods). MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin?

The CAS number of 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin is 39227-28-6.

What are the molecular formula and molecular weight of 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin?

1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin has molecular formula C12H2Cl6O2 and molecular weight 390.86100 g/mol.

What are the upstream and downstream products of 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin?

For 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin, Upstream Products: Chlorobenzene, Tetrachloroethylene, 2,4,5-Trichlorophenol; Downstream Products: 1,2,7,8-Tetrachlorodibenzo-p-dioxin, 1,2,3,7,8-Pentachlorodibenzo-p-dioxin, 1,2,4,7,8-Pentachlorodibenzo-p-dioxin.

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. "1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin (CAS 39227-28-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1004335-3 (accessed 2026-11-09).

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