Aluminium sodium sulphate (E521)
Updated October 2, 2026
Aluminium sodium sulphate (E521) is a food additive in the “other additives” group. It appears in 1,397 products in our database, 1,371 of them sold in the US.
Quick facts
- Also known as
- E521
- E-number
- E521
- Function
- Other additives
- Found in
- 1,397 products (1,371 sold in the US)
Foods that commonly contain Aluminium sodium sulphate
Share of published products in each category whose ingredient list includes Aluminium sodium sulphate.
Popular products with Aluminium sodium sulphate
e 
e NOVA 4 
d NOVA 4 
a NOVA 4 
c NOVA 4 
d NOVA 4 
NOVA 3 
NOVA 4 
d NOVA 4 
d NOVA 4 Aluminium sodium sulphate-free alternatives
Popular products from the same categories that don't list Aluminium sodium sulphate and score Nutri-Score A–C.
a NOVA 4 
a NOVA 4 
c NOVA 4 
a NOVA 3 
a NOVA 4 How to spot Aluminium sodium sulphate on a label
Look for any of these names in the ingredient list:
Related additives
Frequently asked questions
What foods contain Aluminium sodium sulphate?
In our database, Aluminium sodium sulphate most often appears in biscuits, mexican dinner mixes, cakes and frozen foods.
How many products contain Aluminium sodium sulphate?
1,397 published products on Foodmetria list Aluminium sodium sulphate, including 1,371 sold in the United States. Counts come from ingredient lists in Open Food Facts and update daily.
Product data: Open Food Facts (ODbL), updated daily. Additive information is for general education and is not medical advice. Always check the package label. Our methodology.