CheckVegan

Is Octoxynol-9 Carboxylic Acid vegan?

Octoxynol-9 Carboxylic Acid

Vegan Vegan
Vegetarian Vegetarian

Octoxynol-9 Carboxylic Acid is a synthetic carboxylic acid derivative of ethoxylated octylphenol, used as a surfactant in cosmetic formulations.

Also known as 26-(Octylphenoxy)-3,6,9,12,15,18,21,24-octaoxahexacosanoic acid
INCI name Octoxynol-9 Carboxylic Acid
CAS number 25338-58-3
EC number 246-867-0
CosIng ID 35604
Last reviewed 9 July 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.

Report an issue