CheckVegan

Is Antimony Trioxide vegetarian?

Antimony Trioxide

Vegetarian Vegetarian
Vegan Vegan

Antimony trioxide (Sb2O3) is an inorganic compound and the most important commercial antimony compound, occurring naturally as the minerals valentinite and senarmontite, used as a flame retardant synergist and in industrial applications.

Also known as Diantimony Trioxide
INCI name Antimony Trioxide
CAS number 1309-64-4
EC number 215-175-0
CosIng ID 84406
Last reviewed 10 July 2026

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

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