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2,5-Dimethyl-2,5-dihydroxy-1,4-dithiane

Also known as: 2,5-Dimethyl-1,4-dithiane-2,5-diol, 1-Mercaptopropanone (dimer), 2,5-Dihydroxy-2,5-dimethyl-1,4-dithiane, Cyclodithalfarol-705, FEMA 3450, UNII:N99176196Z

2,5-Dimethyl-2,5-dihydroxy-1,4-dithiane (CAS 55704-78-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H12O2S2 and a molecular weight of 180.288 g/mol. Key properties include a melting point of 64 °C, a boiling point of 326.8±42.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 159.1±26.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
55704-78-4
Jingsj CID
J-38718-8
Molecular Formula
C6H12O2S2
Molecular Weight
180.288 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Melting Point64 °C
Boiling Point326.8±42.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point159.1±26.6 °C
Exact Mass180.027863
PSA91.06000
LogP1.01
Vapor Pressure0.0±1.6 mmHg at 25°C
Refractive Index1.609
Additional Propertyslightly soluble

Customs & Trade Information

HS Code2934999090
Summary2934999090. 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 2,5-Dimethyl-2,5-dihydroxy-1,4-dithiane?

The CAS number of 2,5-Dimethyl-2,5-dihydroxy-1,4-dithiane is 55704-78-4.

What are the molecular formula and molecular weight of 2,5-Dimethyl-2,5-dihydroxy-1,4-dithiane?

2,5-Dimethyl-2,5-dihydroxy-1,4-dithiane has molecular formula C6H12O2S2 and molecular weight 180.288 g/mol.

What are the upstream and downstream products of 2,5-Dimethyl-2,5-dihydroxy-1,4-dithiane?

For 2,5-Dimethyl-2,5-dihydroxy-1,4-dithiane, Upstream Products: Chloroacetone; Downstream Products: 2-Amino-4-methylthiophene-3-carbonitrile, Methyl 2-amino-4-methylthiophene-3-carboxylate, N,N,4-Trimethylthiazol-2-amine.

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

Last updated:

How to cite: Jingsj. "2,5-Dimethyl-2,5-dihydroxy-1,4-dithiane (CAS 55704-78-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38718-8 (accessed 2026-11-09).

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