Dibenzo-1,4-dioxin

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Dibenzo-p-dioxin
Dibenzodioxin
Ball-and-stick model
Space-filling model
Names
IUPAC name
Dibenzo-1,4-dioxin
Other names
Dibenzodioxin,
Dibenzo-p-dioxin,
Oxanthrene
Identifiers
3D model (JSmol)
143227
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.005.432
EC Number 205-974-2
280302
KEGG
UNII
UN number 3077
Properties
C12H8O2
Molar mass 184.19 g·mol−1
Appearance White crystals
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)
Hazards
GHS pictograms The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)The environment pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word Warning
H302, H411
P264, P270, P273, P301+312, P330, P391, P501
Related compounds
Related compounds
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).
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Infobox references

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.

Isomer[edit]

The general name dibenzodioxin usually refers to dibenzo-p-dioxin.

Dibenzo-o-dioxin (dibenzo-1,2-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.

See also[edit]

References[edit]

External links[edit]