What is E522?
E522 is Aluminium potassium sulphate, a food additive used as a firming agent. A mineral, so there is no animal, pork or alcohol source.
Also written as: INS 522, E-522, E 522. INS is the international numbering system used outside Europe, including on labels in Asia, Australia and the Middle East.
What to do
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Is E522 vegetarian or vegan?
Yes. E522 (Aluminium potassium sulphate) is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.
Why we classify it this way
Halal A mineral, so there is no animal, pork or alcohol source.
Basis: No concern found. Made from plants, minerals, fermentation or synthesis, or from a permitted animal product. Nothing in normal production raises a pork, alcohol, insect or slaughter question.
No external reference is listed for this record yet.
Classification audited 3 November 2026. It has not been reviewed by a scholar. How classifications work · Suggest a correction
Frequently asked questions
Is E522 halal?
E522 (Aluminium potassium sulphate) is halal. A mineral, so there is no animal, pork or alcohol source.
What is E522 made from?
Mineral salt.
What is E522 used for?
E522 is used as a firming agent.
What should I do if a product contains E522?
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Is E522 vegetarian or vegan?
Yes. E522 (Aluminium potassium sulphate) is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.