Cyclooctadecane-1,3,5,7,9,11,13,15,17-nonene

1,3,5,7,9,11,13,15,17-环十八烯

Also known as: Cyclooctadecanonaen, [18]annulene, cyclooctadecanonaene

Cyclooctadecane-1,3,5,7,9,11,13,15,17-nonene (CAS 2040-73-5) is a compound in the Aliphatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C18H18 and a molecular weight of 234.33600 g/mol. It is also known as Cyclooctadecanonaen, [18]annulene and cyclooctadecanonaene. Key properties include a boiling point of 522.3ºC at 760 mmHg, a density of 0.873g/cm3 and a flash point of 278.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2040-73-5
Jingsj CID
J-1316173-2
Molecular Formula
C18H18
Chinese Name
1,3,5,7,9,11,13,15,17-环十八烯
Molecular Weight
234.33600 g/mol
Category
Aliphatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point522.3ºC at 760 mmHg
Density0.873g/cm3
Flash Point278.7ºC

Frequently Asked Questions

What is the CAS number of Cyclooctadecane-1,3,5,7,9,11,13,15,17-nonene?

The CAS number of Cyclooctadecane-1,3,5,7,9,11,13,15,17-nonene is 2040-73-5.

What are the molecular formula and molecular weight of Cyclooctadecane-1,3,5,7,9,11,13,15,17-nonene?

Cyclooctadecane-1,3,5,7,9,11,13,15,17-nonene has molecular formula C18H18 and molecular weight 234.33600 g/mol.

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

Last updated:

How to cite: Jingsj. "Cyclooctadecane-1,3,5,7,9,11,13,15,17-nonene (CAS 2040-73-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1316173-2 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.