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Is Sodium Octoxynol-2 Ethane Sulfonate vegan?

Sodium Octoxynol-2 Ethane Sulfonate

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Vegetarian Vegetarian

Sodium Octoxynol-2 Ethane Sulfonate is a synthetic anionic surfactant derived from an alkylphenol ethoxylate, chemically the sodium salt of a sulfonated octoxynol ether. It is used as a cleansing and foaming agent in cosmetic products.

Also known as 267-791-4, 55837-16-6, 67923-87-9, Entsufon, Sodium 2-[2-[2-[4-(1,1,3,3-tetramethylbutyl)phenoxy]ethoxy]ethoxy]ethanesulphonate
INCI name Sodium Octoxynol-2 Ethane Sulfonate
CAS number 2917-94-4
EC number 220-851-3
CosIng ID 79883
Last reviewed 4 July 2026

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

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