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Is Silicon Dioxide vegan?

Silicon Dioxide

Vegan

Silicon dioxide (silica) is a naturally occurring mineral compound composed of silicon and oxygen. It is widely used in food and cosmetics as an anticaking agent, thickener, and carrier for flavourings.

Also known as Amorphous silica, Amorphous silicon dioxide, Colloidal silica, Fumed silica, Quartz, Silica, Silicon(IV) oxide
E number E551
CAS number 7631-86-9
EC number 231-545-4
Last reviewed 22 April 2026

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