4,5-Ethylenedithio-1,3-dithiol-2-one

Also known as: 5,6-Dihydro-1,3-dithiolo[4,5-b][1,4]dithiin-2-one, 5,6-dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-one, 1,3-Dithiolo[4,5-b][1,4]dithiin-2-one, 5,6-dihydro-, MFCD00137883, RARECHEM AR PA 0060, ethylenedithiodithiolone

4,5-Ethylenedithio-1,3-dithiol-2-one (CAS 74962-29-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C5H4OS4 and a molecular weight of 208.34500 g/mol. Key properties include a melting point of 128-132ºC(lit.), a boiling point of 357ºC at 760 mmHg, a density of 1.72g/cm3 and a flash point of 169.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 74962-29-1
Jingsj CID: J-6688-6
Molecular Formula: C₅H₄OS₄
Molecular Weight: 208.34500 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	128-132ºC(lit.)
Boiling Point	357ºC at 760 mmHg
Density	1.72g/cm3
Flash Point	169.4ºC
Exact Mass	207.91400
PSA	124.15000
LogP	2.36760
Refractive Index	1.825

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 4,5-Ethylenedithio-1,3-dithiol-2-one?

The CAS number of 4,5-Ethylenedithio-1,3-dithiol-2-one is 74962-29-1.

What are the molecular formula and molecular weight of 4,5-Ethylenedithio-1,3-dithiol-2-one?

4,5-Ethylenedithio-1,3-dithiol-2-one has molecular formula C5H4OS4 and molecular weight 208.34500 g/mol.

What are the upstream and downstream products of 4,5-Ethylenedithio-1,3-dithiol-2-one?

For 4,5-Ethylenedithio-1,3-dithiol-2-one, Upstream Products: 4,5-Ethylenedithio-1,3-dithiole-2-thione, 1,3,4,6-Tetrathiapentalene-2,5-dione, 1,2-Dibromoethane; Downstream Products: Tetrakis(methylthio)tetrathiafulvalene, Bis(ethylenedithio)tetrathiafulvalene, BEDO-TTF.

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-Ethylenedithio-1,3-dithiol-2-one (CAS 74962-29-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6688-6 (accessed 2026-11-09).

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