4,5-Bis(methylthio)-1,3-dithiole-2-thione

Also known as: 1,3-Dithiole-2-thione, 4,5-bis(methylthio)-, 4,5-BIS(METHYLTHIO)-1,3-DITHIOL-2-THIONE, 4,5-BIS(METHYLTHIO)-1,3-DITHIOLE-2-THIONE 97%, 4,5-BIS(METHYLTHIO)-1,3-DITHIOLE-2-THIONE 98+%, 4,5-BIS-METHYLSULFANYL-(1,3)DITHIOLE-2-THIONE, 4,5-Bis(methylthio)-2H-1,3-dithiole-2-thione, 4,5-bis(methylsulfanyl)-1,3-dithiole-2-thione, Bismethylthiodithiolethione, RARECHEM AR PA 0057

4,5-Bis(methylthio)-1,3-dithiole-2-thione (CAS 49638-64-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H6S5 and a molecular weight of 226.42600 g/mol. Key properties include a melting point of 102ºC, a boiling point of 312.4ºC at 760 mmHg, a density of 1.53g/cm3 and a flash point of 142.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 49638-64-4
Jingsj CID: J-1992635-3
Molecular Formula: C₅H₆S₅
Molecular Weight: 226.42600 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	102ºC
Boiling Point	312.4ºC at 760 mmHg
Density	1.53g/cm3
Flash Point	142.7ºC
Exact Mass	225.90700
PSA	139.17000
LogP	3.98290
Refractive Index	1.778

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 4,5-Bis(methylthio)-1,3-dithiole-2-thione?

The CAS number of 4,5-Bis(methylthio)-1,3-dithiole-2-thione is 49638-64-4.

What are the molecular formula and molecular weight of 4,5-Bis(methylthio)-1,3-dithiole-2-thione?

4,5-Bis(methylthio)-1,3-dithiole-2-thione has molecular formula C5H6S5 and molecular weight 226.42600 g/mol.

What are the upstream and downstream products of 4,5-Bis(methylthio)-1,3-dithiole-2-thione?

For 4,5-Bis(methylthio)-1,3-dithiole-2-thione, Upstream Products: Benzoyl chloride, iodomethane, Carbon disulphide; Downstream Products: Tetrakis(methylthio)tetrathiafulvalene, 4,5-Bis(methylthio)-1,3-dithiol-2-one.

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. "4,5-Bis(methylthio)-1,3-dithiole-2-thione (CAS 49638-64-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1992635-3 (accessed 2026-11-09).

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