CheckVegan

Is Sodium Thiosulfate vegetarian?

Sodium Thiosulfate

Vegetarian Vegetarian
Vegan Vegan

Sodium Thiosulfate is an inorganic compound typically available as a colorless crystalline pentahydrate, used as a reducing agent, photographic fixer, and medically as a treatment for cyanide poisoning.

Also known as natrii thiosulfas, Natrii Thiosulfas, Sodium Thiosulphate
INCI name Sodium Thiosulfate
E number E539
INS number 539
CAS number 7772-98-7
EC number 231-867-5
CosIng ID 38103
Last reviewed 4 July 2026

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

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