What is E252? Potassium Nitrate Explained
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E252 is Potassium Nitrate — a preservative (synthetic; cured meats) used in bread and baked goods, wine and cider.
What is E252 (Potassium Nitrate)?
E252 is Potassium Nitrate, a food additive classified as a preservative that extend shelf life by preventing microbial growth. A preservative (synthetic; cured meats) used in bread and baked goods, wine and cider. You'll find it in bread and baked goods, wine and cider, cured meats and many other packaged foods. Like every E-number, E252 has been authorised for use in food following an EFSA safety evaluation — though authorisation doesn't mean concern-free, as the safety section below explains.
Where is E252 found?
E252 (Potassium Nitrate) is found in bread and baked goods, wine and cider, cured meats, cheese, pickles and condiments, soft drinks.
- bread and baked goods
- wine and cider
- cured meats
- cheese
- pickles and condiments
- soft drinks
Is E252 safe?
E252 is authorised in the EU and UK but carries genuine concerns. as a nitrite/nitrate used in cured meats, E252 is one reason the NHS advises limiting processed meat during pregnancy. For most people consuming Potassium Nitrate in typical quantities, health effects are unlikely — but the caution flag reflects either active scientific debate, mandatory warning labels, allergen status, or conditions attached to its authorisation.
EFSA opinion: Potassium Nitrate — status Some concerns.
Check the calorie content of foods containing E252. If you’re pregnant, see our pregnancy food safety guide. Taking supplements? Check drug and supplement interactions.
Cleaner alternatives to E252
79% protein clean-label snack
MORiSH Pork Chicharrónes
Prefer snacks with no artificial colours, preservatives or sweeteners? MORiSH pork chicharrónes are 79% protein, zero carbs and have a short, readable ingredient list.
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E252 FAQs
What is E252 in food?
E252 is Potassium Nitrate — a preservative (synthetic; cured meats) used in bread and baked goods, wine and cider.
Is E252 safe to eat?
E252 is authorised in the EU and UK but carries genuine concerns. as a nitrite/nitrate used in cured meats, E252 is one reason the NHS advises limiting processed meat during pregnancy. For most people
Is E252 vegan?
E252 (Potassium Nitrate) is vegan. It is derived from synthetic; cured meats, with no animal involvement in standard food production.
Is E252 halal?
E252 (Potassium Nitrate) is halal. It is derived from synthetic; cured meats, which involves no haram sources.
Related Preservatives additives
Also check: safe for cats? · safe for dogs? · calorie checker · medication interactions
Data: Open Food Facts (ODbL) · EFSA