CheckVegan
Open Vegan Ingredient Database

Is Aluminium Sodium Sulphate vegan?

Aluminium Sodium Sulphate

Vegan Vegan
Vegetarian Vegetarian

Aluminium Sodium Sulphate (sodium alum) is an inorganic salt used as a firming agent and stabiliser (E521) in food products.

Also known as Aluminum sodium sulfate, Soda alum, Sodium alum, Sodium aluminium sulfate, Sodium Aluminum Sulfate
E number E521
INS number 521
CAS number 10102-71-3
EC number 233-277-3
Last verified 22 April 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

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