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Etymologie

Was (wer) ist furan - definition

CHEMICAL COMPOUND

Furane; Furans; Furfuran; Tetraphenol; C4H4O; Furanic; Oxole; Divinyl oxide; Furanoid; Furan ring; Furfurane; Furan gas

furan

['fj??ran]

¦ noun Chemistry a volatile liquid organic compound with an unsaturated five-membered ring in its molecule.

Origin

C19: from synonymous furfuran, from L. furfur 'bran' + -an.

Tetraphenol

·noun Furfuran.

Furfuran

·noun A colorless, oily substance, C₄H₄O, obtained by distilling certain organic substances, as pine wood, salts of pyromucic acid, ·etc.;

- called also tetraphenol.

Wikipedia

Furan

Furan is a heterocyclic organic compound, consisting of a five-membered aromatic ring with four carbon atoms and one oxygen atom. Chemical compounds containing such rings are also referred to as furans.

Furan is a colorless, flammable, highly volatile liquid with a boiling point close to room temperature. It is soluble in common organic solvents, including alcohol, ether, and acetone, and is slightly soluble in water. Its odor is "strong, ethereal; chloroform-like". It is toxic and may be carcinogenic in humans. Furan is used as a starting point for other speciality chemicals.

https://en.wikipedia.org/wiki/Furan

Beispiele aus Textkorpus für furan

1. People fear dioxin and furan emissions will endanger the river‘s fish and birds and wreak havoc on their citrus orchards and commercial honeybees.

2. Mr Johnson said China‘s cement kilns, which account for around 40 per cent of global production, are becoming major sources of dioxin and furan which, like mercury, can be transported airborne across long distances.

3. We shouldn’t breathe the poison from the burnt cables that release dioxins and furan,» said Eva Zimaraki, the head of a local group formed to protest against the environmental problem. «Residents are complaining of dizzy spells, headaches and breathing problems,» she added.