CodeE333 · INS 333
TypeAcidity regulator
Made fromMade from citric acid.
Found insoft drinks, sweets, jams, sauces and processed foods
What is E333?
E333 is Calcium citrates, an acidity regulator. Microbial.
Also written as: INS 333, E-333, E 333. 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 E333 halal?
E333 (Calcium citrates) is halal. Microbial.
What is E333 made from?
Made from citric acid.
What is E333 used for?
E333 is used as an acidity regulator, typically in soft drinks, sweets, jams, sauces and processed foods.
What should I do if a product contains E333?
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 acidE332Potassium citratesE334Tartaric acid
Last reviewed 2026-10-06. How we decide · Suggest a correction