T

Thiophene

IUPAC: thiophene

C4H4S Organic Compounds CAS 110-02-1
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Quick Reference
Formula / NotationC4H4S
CAS Number110-02-1
Molecular Weight84.14
Melting Point-36.8 °F (NTP, 1992)
Boiling Point183.9 °F at 760 mmHg (NTP, 1992)
Density1.0649 at 68 °F (NTP, 1992) - Denser than water; will sink
Solubilityless than 1 mg/mL at 75 °F (NTP, 1992)
AppearanceThiophene appears as a colorless liquid with an unpleasant odor. Insoluble in water and slightly denser than water. Flash point 30 °F. Vapors heavier than air. Irritates the skin, eyes, and mucous...
Also Known As110-02-1; Thiofuran; Thiole; Thiophen; Thiotetrole; Thiacyclopentadiene; Thiofurfuran; Divinylene sulfide; Thiaphene; Thiofuram
CategoryOrganic Compounds

What is Thiophene?

Thiophene is a monocyclic heteroarene that is furan in which the oxygen atom is replaced by a sulfur. It has a role as a non-polar solvent. It is a volatile organic compound, a member of thiophenes, a mancude organic heteromonocyclic parent and a monocyclic heteroarene.

Formula & Notation

C4H4S

IUPAC Name: thiophene

Other Names / Synonyms: 110-02-1; Thiofuran; Thiole; Thiophen; Thiotetrole; Thiacyclopentadiene; Thiofurfuran; Divinylene sulfide; Thiaphene; Thiofuram

Properties & Characteristics

Appearance: Thiophene appears as a colorless liquid with an unpleasant odor. Insoluble in water and slightly denser than water. Flash point 30 °F. Vapors heavier than air. Irritates the skin, eyes, and mucous.... Molecular formula: C4H4S. Molecular weight: 84.14 g/mol. Boiling point: 183.9 °F at 760 mmHg (NTP, 1992). Melting point: -36.8 °F (NTP, 1992). Density: 1.0649 at 68 °F (NTP, 1992) - Denser than water; will sink. Solubility: less than 1 mg/mL at 75 °F (NTP, 1992). Vapor pressure: 20 mmHg at 32 °F ; 60 mmHg at 68.2 °F; 760 mmHg at 183.9 °F (NTP, 1992). LogP: 1.8.

Physical Data

PropertyValue
Melting Point-36.8 °F (NTP, 1992)
Boiling Point183.9 °F at 760 mmHg (NTP, 1992)
Density1.0649 at 68 °F (NTP, 1992) - Denser than water; will sink
Molecular Weight84.14
Solubilityless than 1 mg/mL at 75 °F (NTP, 1992)
AppearanceThiophene appears as a colorless liquid with an unpleasant odor. Insoluble in water and slightly denser than water. Flash point 30 °F. Vapors heavier than air. Irritates the skin, eyes, and mucous...

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Thiophene
Formula C4H4S
CAS Number 110-02-1
Molecular Weight 84.14
Synonyms 110-02-1; Thiofuran; Thiole; Thiophen; Thiotetrole; Thiacyclopentadiene; Thiofurfuran; Divinylene sulfide; Thiaphene; Thiofuram

Frequently Asked Questions

Thiophene is a monocyclic heteroarene that is furan in which the oxygen atom is replaced by a sulfur. It has a role as a non-polar solvent. It is a volatile organic compound, a member of thiophenes, a mancude organic heteromonocyclic parent and a monocyclic heteroarene.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.