Dibenzofuran

  • DBF
  • Diphenylenoxyd

Colorless, blue fluorescent needles

Fixed

1.3 g · cm -3 ( 20 ° C)

79-82 ° C

287-289 ° C

  • Poorly in water
  • Soluble in ethanol and diethyl ether

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Dibenzofuran is a heterocyclic aromatic organic compound, which is composed of a furan ring in the center and two benzene rings fused thereto. At each of the outer carbon atoms is a hydrogen atom is bonded in each case. Dibenzofuran is an aromatic ether.

Use

Dibenzofuran contained in some Wärmebadmischungen and candle compositions, and is used for the preparation of biphenyls. There are also natural derivatives, such as the usnic acid.

Dibenzofurans

Under dibenzofurans can understand an entire class of compounds, in which the hydrogen atoms are replaced by other atoms or groups. For example, the hydrogen atoms on the carbon atoms 2, 3, 7 and 8 are replaced by chlorine atoms in the 2,3,7,8- Tetrachlordibenzofuran ( TCDF ). Polychlorinated dibenzofurans are highly toxic substances with properties similar to dioxins.

The dibenzofuran TCDF ( 2,3,7,8- Tetrachlordibenzofuran ) is the equivalent of the Dibenzodioxins dibenzofuran and 2,3,7,8- Sevesogifts tetrachlorodibenzodioxin.

CAS registry number Dangerous Substances Directive (67/548/EEC)
235589
de