Undecylenic acid

十一烯酸

Also known as: 10-Hendecenoic acid, 10-Undecenoic acid, Declid, Desenex, Renselin, Sevinon, undec-10-enoic acid, undecylenic acid

Undecylenic acid (CAS 1333-28-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H20O2 and a molecular weight of 184.27500 g/mol. It is also known as 10-Hendecenoic acid, 10-Undecenoic acid and Declid. Key properties include a boiling point of 1065.5ºC at 760mmHg, a density of 1.63g/cm3 and a flash point of 598.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1333-28-4
Jingsj CID
J-1347676-4
Molecular Formula
C11H20O2
Chinese Name
十一烯酸
Molecular Weight
184.27500 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point1065.5ºC at 760mmHg
Density1.63g/cm3
Flash Point598.2ºC

Frequently Asked Questions

What is the CAS number of Undecylenic acid?

The CAS number of Undecylenic acid is 1333-28-4.

What are the molecular formula and molecular weight of Undecylenic acid?

Undecylenic acid has molecular formula C11H20O2 and molecular weight 184.27500 g/mol.

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

Last updated:

How to cite: Jingsj. "Undecylenic acid (CAS 1333-28-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1347676-4 (accessed 2026-10-25).

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