CodeE331 · INS 331
TypeAcidity regulator
Made fromMade from citric acid.
Found insoft drinks, sweets, jams, sauces and processed foods
What is E331?
E331 is Sodium citrates, an acidity regulator. Microbial.
Also written as: INS 331, E-331, E 331. 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.
Frequently asked questions
Is E331 halal?
E331 (Sodium citrates) is halal. Microbial.
What is E331 made from?
Made from citric acid.
What is E331 used for?
E331 is used as an acidity regulator, typically in soft drinks, sweets, jams, sauces and processed foods.
What should I do if a product contains E331?
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Related E-numbers
E260Acetic acidE261Potassium acetateE262Sodium acetatesE263Calcium acetateE270Lactic acidE296Malic acidE330Citric acidE332Potassium citrates
Last reviewed 2026-10-06. How we decide · Suggest a correction