What is E555?
E555 is Potassium aluminium silicate, a food additive used as an anti-caking agent. Mineral (mica). Gives a pearly shine to sweets and cake decorations.
Also written as: INS 555, E-555, E 555. 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 E555 vegetarian or vegan?
Yes. E555 (Potassium aluminium silicate) 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 Mineral (mica). Gives a pearly shine to sweets and cake decorations.
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 E555 halal?
E555 (Potassium aluminium silicate) is halal. Mineral (mica). Gives a pearly shine to sweets and cake decorations.
What is E555 made from?
Mineral salt.
What is E555 used for?
E555 is used as an anti-caking agent, typically in salt, powdered drinks, spices, supplements and tablets.
What should I do if a product contains E555?
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Is E555 vegetarian or vegan?
Yes. E555 (Potassium aluminium silicate) is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.