CheckVegan

Is Bithionol vegetarian?

Bithionol

Vegetarian Vegetarian
Vegan Vegan

Bithionol is a synthetic chlorinated phenolic compound formerly used as an antiseptic and anthelmintic agent; it is banned in cosmetics due to its photosensitizing properties.

Also known as 2,2'-Thiobis(4,6-dichlorophenol), bithionol
INCI name Bithionol
CAS number 97-18-7
EC number 202-565-0
CosIng ID 28691
Last reviewed 9 July 2026

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

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