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 184.194 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 GHS07: HarmfulGHS09: Environmental hazard
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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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]