Tetrahydrothiophene

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Tetrahydrothiophene
Image:Tetrahydrothiophene.png	Image:Tetrahydrothiophene3d.png
IUPAC name	Tetrahydrothiophene
Identifiers
CAS number	110-01-0
SMILES	C1CCSC1
Properties
Molecular formula	C4H8S
Molar mass	88.10 g/mol
Melting point	-96 °C
Boiling point	119 °C
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

For other uses of THT, see THT (disambiguation)

Tetrahydrothiophene is a heterocyclic organic compound consisting of a five-membered ring containing four carbon atoms and a sulfur atom. It is the saturated analog of thiophene. It is a volatile, clear, colorless liquid with a strong unpleasant odor.

Because of its smell, tetrahydrothiophene is occasionally used as an odorant in natural gas, in place of the more common ethanethiol. It is also used as a solvent, as an insecticide, and as a moth repellant. It is an intermediate in the preparation of the solvent sulfolane, which is produced by the oxidation of tetrahydrothiophene. It is also used as an electrolyte for lithium batteries.

As an odorant, it has numerous advantages against ethanethiol. It is not corrosive to the gas pipes and valves, it does not cause habitual desactivation of sense of smell, and it does not cause irritant responses of coughing, tears, and headache. It is regarded to be an ideal gas indicator in use. [1]

See also

• Tetrahydrofuran
• Thiophene

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