Is Sodium Aluminum Sulfate vegan?

Sodium Aluminum Sulfate

Vegan

Sodium aluminum sulfate is a white crystalline solid produced by combining sodium sulfate and aluminum sulfate. It is used as an acidity regulator and leavening acid in baking powder formulations and as a food additive (E521).

Also known as Aluminum sodium sulfate, Soda alum, Sodium alum
E number E521
CAS number 10102-71-3
EC number 233-277-3
Last reviewed 16 April 2026

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