T

Thiophenol

IUPAC: benzenethiol

C6H6S Organic Compounds CAS 108-98-5
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Quick Reference
Formula / NotationC6H6S
CAS Number108-98-5
Molecular Weight110.18
Melting Point5.4 °F (EPA, 1998)
Boiling Point334.9 °F at 760 mmHg (EPA, 1998)
Density1.0728 at 77 °F (EPA, 1998) - Denser than water; will sink
Solubility0.08 % at 77 °F (NIOSH, 2024)
AppearancePhenyl mercaptan appears as a clear liquid with a repulsive odor. Boiling point 168.3 °C. Insoluble in water and denser than water. Very toxic by ingestion, skin absorption, and by inhalation. Use...
Also Known Asbenzenethiol; Benzenethiol; 108-98-5; Mercaptobenzene; Phenyl mercaptan; Phenylthiol; Phenylmercaptan; Phenol, thio-; Thiofenol; thiophenate
CategoryOrganic Compounds

What is Thiophenol?

Thiophenol (C6H6S) is an organic compound that appears as Phenyl mercaptan appears as a clear liquid with a repulsive odor. Boiling point 168.3 °C. Insoluble in water and denser than water. Very toxic by ingestion, skin absorption, and by inhalation. Use.... It has a molecular weight of 110.18 g/mol. Its IUPAC name is benzenethiol. Boiling point: 334.9 °F at 760 mmHg (EPA, 1998). Melting point: 5.4 °F (EPA, 1998).

Formula & Notation

C6H6S

IUPAC Name: benzenethiol

Other Names / Synonyms: benzenethiol; Benzenethiol; 108-98-5; Mercaptobenzene; Phenyl mercaptan; Phenylthiol; Phenylmercaptan; Phenol, thio-; Thiofenol; thiophenate

Properties & Characteristics

Appearance: Phenyl mercaptan appears as a clear liquid with a repulsive odor. Boiling point 168.3 °C. Insoluble in water and denser than water. Very toxic by ingestion, skin absorption, and by inhalation. Use.... Molecular formula: C6H6S. Molecular weight: 110.18 g/mol. Boiling point: 334.9 °F at 760 mmHg (EPA, 1998). Melting point: 5.4 °F (EPA, 1998). Density: 1.0728 at 77 °F (EPA, 1998) - Denser than water; will sink. Solubility: 0.08 % at 77 °F (NIOSH, 2024). Vapor pressure: 1 mmHg at 65.48 °F (EPA, 1998). LogP: 2.5.

Physical Data

PropertyValue
Melting Point5.4 °F (EPA, 1998)
Boiling Point334.9 °F at 760 mmHg (EPA, 1998)
Density1.0728 at 77 °F (EPA, 1998) - Denser than water; will sink
Molecular Weight110.18
Solubility0.08 % at 77 °F (NIOSH, 2024)
AppearancePhenyl mercaptan appears as a clear liquid with a repulsive odor. Boiling point 168.3 °C. Insoluble in water and denser than water. Very toxic by ingestion, skin absorption, and by inhalation. Use...

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 Thiophenol
Formula C6H6S
CAS Number 108-98-5
Molecular Weight 110.18
Synonyms benzenethiol; Benzenethiol; 108-98-5; Mercaptobenzene; Phenyl mercaptan; Phenylthiol; Phenylmercaptan; Phenol, thio-; Thiofenol; thiophenate

Frequently Asked Questions

Thiophenol (C6H6S) is an organic compound that appears as Phenyl mercaptan appears as a clear liquid with a repulsive odor. Boiling point 168.3 °C. Insoluble in water and denser than water. Very toxic by ingestion, skin absorption, and by inhalation. Use.... It has a molecular weight of 110.18 g/mol. Its IUPAC name is benzenethiol. Boiling point: 334.9 °F at 760 mmHg (EPA, 1998). Melting point: 5.4 °F (EPA, 1998).

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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.