4,4'-Dimethyldiphenylsulfoxide

Also known as: p-Tolyl sulfoxide, Di-p-tolyl sulfoxide, Bis(4-methylphenyl) sulfoxide, Ditolyl sulfoxide, 4,4'-DIMETHYL DIPHENYL SULFOXIDE, 4,4'-Dimethyldiphenylsulphoxide, 4,4'-Ditolyl sulfoxide, 1,1'-Sulfinylbis(4-methylbenzene), Bis(p-tolyl)sulphoxide, 1-methyl-4-[(4-methylphenyl)sulfinyl]benzene, MFCD00008546, EINECS 217-203-7

4,4'-Dimethyldiphenylsulfoxide (CAS 1774-35-2) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C14H14OS and a molecular weight of 230.325 g/mol. Key properties include a melting point of 94-96 °C(lit.), a boiling point of 378.3±31.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 182.6±24.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1774-35-2
Jingsj CID: J-21399-0
Molecular Formula: C₁₄H₁₄OS
Molecular Weight: 230.325 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	94-96 °C(lit.)
Boiling Point	378.3±31.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	182.6±24.8 °C
Exact Mass	230.076538
PSA	36.28000
LogP	2.98
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.641

Customs & Trade Information

HS Code	2930909090
Summary	2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4,4'-Dimethyldiphenylsulfoxide?

The CAS number of 4,4'-Dimethyldiphenylsulfoxide is 1774-35-2.

What are the molecular formula and molecular weight of 4,4'-Dimethyldiphenylsulfoxide?

4,4'-Dimethyldiphenylsulfoxide has molecular formula C14H14OS and molecular weight 230.325 g/mol.

What are the upstream and downstream products of 4,4'-Dimethyldiphenylsulfoxide?

For 4,4'-Dimethyldiphenylsulfoxide, Upstream Products: 4-Iodotoluene, Bis(4-methylphenyl) sulfide, 4-Bromotoluene; Downstream Products: Bis(4-methylphenyl) sulfide, 4-Fluorobenzaldehyde, Diphenyl sulfoxide.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4,4'-Dimethyldiphenylsulfoxide (CAS 1774-35-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21399-0 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.