Aluminium ammonium sulphate
Function: Stabiliser
E523 is the European food-additive number for Aluminium ammonium sulphate, a stabiliser — keeps a food's physical state uniform and stops it separating. Aluminium ammonium sulphate (E523) is a stabiliser used as a food additive.
What is E523 used for?
Aluminium ammonium sulphate (E523) is a stabiliser — keeps a food's physical state uniform and stops it separating. It is added during food production for a technological purpose rather than for nutrition. See all stabilisers (E-numbers).
Is E523 safe or restricted?
E523 is approved for use in the EU. It sits among the additives EFSA keeps under ongoing review as new evidence is published. Forkin classifies it as “Under monitoring” and does not make health claims. See the methodology for how regulatory levels are assigned, or the guide to how EU additives are approved, re-evaluated and banned.
Is E523 vegan or vegetarian?
Aluminium ammonium sulphate (E523) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians.
The production source can vary between manufacturers — the Forkin app shows the verified vegan and vegetarian status per product. Always read the label for allergens.
Which foods contain E523?
E523 appears in 49 of the 4.7 million products in Forkin's catalogue — most often in biscuits & cookies, extruded snacks and chocolate candy.
- Biscuits & Cookies10
- Extruded Snacks8
- Chocolate Candy7
- Candy & Sweets3
- Instant Noodles3
- Food Coloring / Decorations2
- Cake Mixes1
- Dessert Mixes1
Often appears alongside
Additives most frequently found in the same ingredient lists as E523 across the catalogue.
Counts reflect Forkin's independently enriched product catalogue and update as new products are added — they are not a market-share statistic.
Frequently asked questions about E523
- What is E523?
- E523 is the E-number for Aluminium ammonium sulphate, a stabiliser — keeps a food's physical state uniform and stops it separating. Aluminium ammonium sulphate (E523) is a stabiliser used as a food additive.
- What is E523 used for?
- Aluminium ammonium sulphate (E523) is a stabiliser — keeps a food's physical state uniform and stops it separating. Manufacturers add it during processing rather than for nutrition. The Forkin app shows which products in your scan history actually contain it.
- Which foods contain E523?
- E523 appears in 49 of the 4.7 million products in Forkin's catalogue — most often in biscuits & cookies, extruded snacks and chocolate candy. Scan any barcode with the Forkin app to see instantly whether a specific product contains it.
- Is E523 vegan or vegetarian?
- Aluminium ammonium sulphate (E523) is typically produced from plant, mineral, or synthetic sources, so it is generally suitable for vegans and vegetarians. The Forkin app shows the verified vegan and vegetarian status per product, since the source can vary between manufacturers.
- Is E523 safe, and is it banned anywhere?
- E523 is approved for use in the EU. It sits among the additives EFSA keeps under ongoing review as new evidence is published. Forkin classifies it as "Under monitoring" and does not make health claims — see the methodology page for how regulatory levels are assigned, and the Forkin app for the full profile, including acceptable daily intake (ADI) and restrictions by country.
See the full profile in Forkin
The Forkin app surfaces the full regulatory profile of E523 — acceptable daily intake (ADI), restrictions by country, vegan/vegetarian status, alternative names, and which products in your scan history contain it. See view pricing.