(9E,11E)-9,11-Octadecadienoic acid

9(E),11(E)-十八碳二烯酸

Also known as: 9(E),11(E)-Octadecadienoic acid, trans,trans-9,11-Octadecadienoic acid, 9(E),11(E)-Conjugated Linoleic Acid, trans-9,trans-11-Octadecadienoic acid, 9-trans,11-trans-CLA

(9E,11E)-9,11-Octadecadienoic acid (CAS 544-71-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H32O2 and a molecular weight of 280.445 g/mol. It is also known as 9(E),11(E)-Octadecadienoic acid, trans,trans-9,11-Octadecadienoic acid and 9(E),11(E)-Conjugated Linoleic Acid. Key properties include a boiling point of 381.6±11.0 °C at 760 mmHg, a density of 0.9±0.1 g/cm3 and a flash point of 278.5±14.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
544-71-8
Jingsj CID
J-1156945-1
Molecular Formula
C18H32O2
Chinese Name
9(E),11(E)-十八碳二烯酸
Molecular Weight
280.445 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point381.6±11.0 °C at 760 mmHg
Density0.9±0.1 g/cm3
Flash Point278.5±14.4 °C

Frequently Asked Questions

What is the CAS number of (9E,11E)-9,11-Octadecadienoic acid?

The CAS number of (9E,11E)-9,11-Octadecadienoic acid is 544-71-8.

What are the molecular formula and molecular weight of (9E,11E)-9,11-Octadecadienoic acid?

(9E,11E)-9,11-Octadecadienoic acid has molecular formula C18H32O2 and molecular weight 280.445 g/mol.

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

Last updated:

How to cite: Jingsj. "(9E,11E)-9,11-Octadecadienoic acid (CAS 544-71-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1156945-1 (accessed 2026-10-25).

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