| Dibenzo-p-dioxin | |
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Dibenzo-1,4-dioxin |
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Other names
Dibenzodioxin, |
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| Identifiers | |
| CAS number | 262-12-4 |
| ChemSpider | 8861 |
| KEGG | C07732 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C12H8O2 |
| Molar mass | 184.19 g mol−1 |
| Appearance | White crystals |
| Melting point |
122 °C, 395 K, 252 °F |
| Boiling point |
283.5 °C, 557 K, 542 °F |
| Related compounds | |
| Related compounds | dioxin 1,4-dioxin polychlorinated dibenzodioxins |
| (verify) (what is: /?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Dibenzo-p-dioxin (dibenzo-para-dioxin) or dibenzo-1,4-dioxin is an organic heterocyclic 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 a six-membered dioxin ring.
The isomeric compound dibenzo-o-dioxin or dibenzo-1,2-dioxin has two adjacent oxygen atoms (ortho). As no detailed information is available on the dibenzo-ortho-dioxin isomer, it is expected to be highly unstable, with peroxide-like characteristics.
The general name dibenzodioxin usually refers to dibenzo-p-dioxin.
Dibenzodioxin forms the scaffold for the class of chemicals known collectively as dioxins, which include the potent toxins polychlorinated dibenzodioxins (PCDDs) such as 2,3,7,8-tetrachlorodibenzodioxin.