CheckVegan

Is Octylisothiazolinone vegetarian?

Octylisothiazolinone

Vegetarian Vegetarian
Vegan Vegan

Octylisothiazolinone is a synthetic isothiazolinone compound used as a preservative and biocide in personal care and industrial products.

Also known as 2-Octyl-3(2H)-isothiazolinone
INCI name Octylisothiazolinone
CAS number 26530-20-1
EC number 247-761-7
CosIng ID 57621
Last reviewed 9 July 2026

An ingredient is considered vegetarian if it avoids components derived from killing an animal.

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