Do diphenyl sulfide and thiodiphenyl correspond to the same CAS number?

Yes. Diphenyl sulfide, phenyl sulfide, and thiodiphenyl are different names for the same chemical substance registered under CAS 139‑66‑2.

What is the typical role of diphenyl sulfide in organic synthesis processes?

Diphenyl sulfide is commonly used as an intermediate that introduces a sulfur linkage into aromatic structures, serving as a starting or connecting unit for further functionalization in sulfur‑containing fine chemical synthesis.

Diphenyl Sulfide CAS 139‑66‑2

Diphenyl Sulfide is an aromatic thioether also known as phenyl sulfide or thiodiphenyl, all referring to the same chemical substance. Identified by CAS 139‑66‑2, it consists of two phenyl groups linked by a sulfur atom, providing chemical stability and characteristic reactivity in substitution and oxidation reactions. In industrial processing, it is primarily used as an intermediate for sulfur‑containing organic synthesis, where it serves as a structural building block for downstream fine chemicals and specialty intermediates.
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CAS: 139-66-2
Synonyms: Diphenyl Sulfide, Phenyl Sulfide, Thiodiphenyl
Einecs: 205-371-4
Molecular Formula: C12H10S
Grade: Industrial grade 99%
Package: 200kg iron drum or 50kg plastic drum packaging

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Product Description

Foreign name：Phenyl sulfide

Alias：diphenyl sulfur; diphenyl sulfide; phenyl sulfide; diphenyl sulfur; thiobenzene; benzene sulfide;

chemical formula：C12H10S

molecular weight：186.27

CAS login number：139-66-2

EINECS login number：205-371-4

Melting point：-40 ℃

Boiling point：296 ℃

water solubility：Insoluble in water

Density：1.113

Appearance：Colorless or yellowish liquid

relative density：1.1185

application：It is used as an intermediate for pesticides, medicines, and dyes

Properties and stability：Poisonous. ingestion, inhalation, or skin contact and absorption can cause serious injury or even death. Appropriate protective clothing should be worn.

Storage method：It should be sealed and stored in a cool place.

FAQ - Technical & Supply Chain

Q:
Do diphenyl sulfide and thiodiphenyl correspond to the same CAS number?

A: Yes. Diphenyl sulfide, phenyl sulfide, and thiodiphenyl are different names for the same chemical substance registered under CAS 139‑66‑2.
Q:
What is the typical role of diphenyl sulfide in organic synthesis processes?

A: Diphenyl sulfide is commonly used as an intermediate that introduces a sulfur linkage into aromatic structures, serving as a starting or connecting unit for further functionalization in sulfur‑containing fine chemical synthesis.

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