Stabiliser
E521 (aluminium sodium sulphate): what it is, its sources, vegan or not
E521 is aluminium sodium sulphate, a stabiliser. E521 comes from minerals. Vegan and vegetarian profiles get Fits you.
By Bravoora teamUpdated Sources checked 4 sourcesHow we check
Fits you
for a vegan profile
E521=minerals
What is E521?
E521 (aluminium sodium sulphate) is a stabiliser, an additive that keeps the texture and the mix of a food the same over time. Allowed in the EU only in liquid egg white and in candied fruit and vegetables.
What is E521 made from?
E521 comes from minerals.
- Minerals
Is E521 vegan?
Fits you. E521 comes from minerals. Nothing from an animal.
What the app says to each profile, and the reason it shows.
What other names does E521 have on a label?
On a label, E521 can also appear as “INS 521”, “Stabiliser (521)”, “Stabiliser (E521)”, “Aluminium sodium sulphate” or “Aluminium sodium sulfate”.
Any of these on a pack means E521. The checker reads them all.
What would change the answer for E521?
For E521, only the ingredient list itself: a code the camera cannot read gets Needs one more scan, and the app never guesses a code it cannot see.
Sources: EU, US and Codex additive rules
Where additives are listed and approved. Bravoora reads the source and the diet; it does not rate the hazard.
- EU Regulation 1333/2008 on food additives (the E-number list)
- EU Regulation 1169/2011, Annex II: the allergen sources a label must name
- US FDA: Food Additive Status List
- FAO/WHO Codex: General Standard for Food Additives (GSFA) online
Names and classes cross-checked with Open Food Facts (Open Database License).
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