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2,2,5,5-Tetramethyl-2,5-disila-1-oxacyclopentane

Also known as: 1,1,4,4-Tetramethyl-1,4-disila-5-oxacyclopentane, 2,2,5,5-Tetramethyl-1,2,5-oxadisilolane, 1-Oxa-2,5-disilacyclopentane, 2,2,5,5-tetramethyl-, Tetramethyldisilaoxacyclopentane, 2,2,5,5-tetramethyl-1-oxa-2,5-disilacyclopentane, 2,2,5,5-tetramethyl-1-oxa-5-disilacyclopentane, 2,5-Disila-2,2,5,5-tetramethyl-1-oxacyclopentane, Tetramethyldisilafuran, EINECS 231-037-2

2,2,5,5-Tetramethyl-2,5-disila-1-oxacyclopentane (CAS 7418-20-4) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C6H16OSi2 and a molecular weight of 160.362 g/mol. Key properties include a melting point of <0ºC, a boiling point of 123.7±8.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 17.7±18.8 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
7418-20-4
Jingsj CID
J-925041-3
Molecular Formula
C6H16OSi2
Molecular Weight
160.362 g/mol
Category
Aliphatic Hydrocarbons
Last updated
11/3/2026

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Physicochemical Properties

Melting Point<0ºC
Boiling Point123.7±8.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point17.7±18.8 °C
Exact Mass160.073975
PSA9.23000
LogP3.99
Vapor Pressure15.9±0.2 mmHg at 25°C
Refractive Index1.417
Storage Conditions2~8℃,Seal

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 2,2,5,5-Tetramethyl-2,5-disila-1-oxacyclopentane?

The CAS number of 2,2,5,5-Tetramethyl-2,5-disila-1-oxacyclopentane is 7418-20-4.

What are the molecular formula and molecular weight of 2,2,5,5-Tetramethyl-2,5-disila-1-oxacyclopentane?

2,2,5,5-Tetramethyl-2,5-disila-1-oxacyclopentane has molecular formula C6H16OSi2 and molecular weight 160.362 g/mol.

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

Last updated:

How to cite: Jingsj. "2,2,5,5-Tetramethyl-2,5-disila-1-oxacyclopentane (CAS 7418-20-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-925041-3 (accessed 2026-11-09).

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