CodeE251 · INS 251
TypePreservative
Made fromMineral / synthetic.
Found insoft drinks, bread, cured meats, dried fruit and sauces
What is E251?
E251 is Sodium nitrate, a preservative. Synthetic.
Also written as: INS 251, E-251, E 251. 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 E251 halal?
E251 (Sodium nitrate) is halal. Synthetic.
What is E251 made from?
Mineral / synthetic.
What is E251 used for?
E251 is used as a preservative, typically in soft drinks, bread, cured meats, dried fruit and sauces.
What should I do if a product contains E251?
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
E200Sorbic acidE202Potassium sorbateE210Benzoic acidE211Sodium benzoateE212Potassium benzoateE213Calcium benzoateE250Sodium nitriteE252Potassium nitrate
Last reviewed 2026-10-06. How we decide · Suggest a correction