|Preferred IUPAC name
3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||184.194 g·mol−1|
|Melting point||122 °C (252 °F; 395 K)|
|Boiling point||283.5 °C (542.3 °F; 556.6 K)|
|0.901 g/L (25 °C)|
|GHS Signal word||Warning|
|P264, P270, P273, P301+312, P330, P391, P501|
|polychlorinated dibenzodioxins ("dioxin"),|
dioxins and dioxin-like compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Dibenzo-1,4-dioxin, also dibenzodioxin or dibenzo-p-dioxin (dibenzo-para-dioxin), is a polycyclic heterocyclic organic compound in which two benzene rings are connected by a 1,4-dioxin ring. Its molecular formula is C12H8O2. The two oxygen atoms occupy opposite (para-) positions in the six-membered dioxin ring.
Dibenzodioxin is the carbon skeleton of the poisonous polychlorinated dibenzodioxins (PCDDs), often called dioxins. The most harmful PCDD is 2,3,7,8-tetrachlorodibenzodioxin (TCDD). Dioxins and dioxin-like compounds is a category of pollutants that includes PCDDs and other compounds that have similar structure, toxicity, and persistence. Dibenzodioxin is also the skeleton of the polybrominated dibenzodioxins.
The general name dibenzodioxin usually refers to dibenzo-p-dioxin.
The isomeric compound dibenzo-o-dioxin (dibenzo-ortho-dioxin) or dibenzo-1,2-dioxin, like the unstable 1,2-dioxin, has two adjacent oxygen atoms (ortho-). No detailed information is available on this isomer, but it is expected to be highly unstable, with peroxide-like characteristics.
- Thianthrene, the sulfur analog of dibenzodioxin
- Dibenzo-1,4-dioxin in the ChemIDplus database
|Wikimedia Commons has media related to dibenzo-p-dioxin.|