What is E343?
E343 is Magnesium phosphates, a food additive used as an acidity regulator. A mineral, so there is no animal, pork or alcohol source.
Also written as: INS 343, E-343, E 343. 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 E343 vegetarian or vegan?
Yes. E343 (Magnesium phosphates) 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 E343 halal?
E343 (Magnesium phosphates) is halal. A mineral, so there is no animal, pork or alcohol source.
What is E343 made from?
Mineral salt.
What is E343 used for?
E343 is used as an acidity regulator, typically in soft drinks, sweets, jams, sauces and processed foods.
What should I do if a product contains E343?
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Is E343 vegetarian or vegan?
Yes. E343 (Magnesium phosphates) is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.