Digestoa
Additive · Preservative

Sodium nitrate (E251)

Sodium nitrate (E251) is a preservative that Digestoa flags as high risk. Common concerns include nitrosamine formation.

Digestoa riskHigh risk
TypePreservative
Found inpackaged meats, baked goods, soft drinks and other long-shelf-life foods
ConcernsNitrosamine formation

What is Sodium nitrate?

Sodium nitrate (E251) is a preservative — used to extend shelf life and stop spoilage.

Is Sodium nitrate bad for you?

Digestoa flags Sodium nitrate as high risk. Regulators permit it, but safety reviews and studies have raised concerns including nitrosamine formation. How often you eat it matters more than a single exposure.

What foods contain Sodium nitrate?

Packaged meats, baked goods, soft drinks and other long-shelf-life foods.

Digestoa's take

You don't need to panic over a single product that contains Sodium nitrate. But it's a useful flag: when you see E251 on a label it often signals a more processed product, and there's usually a cleaner alternative.

Safer swaps

Choose fresher items with shorter shelf lives, or naturally preserved products.

Frequently asked questions

Is E251 the same as Sodium nitrate?
Yes — E251 is the international additive (E-number) code for Sodium nitrate.
Is Sodium nitrate bad for you?
Digestoa flags Sodium nitrate (E251) as high risk. It's permitted in food, but it's associated with concerns such as nitrosamine formation.
What are the side effects of Sodium nitrate?
Reported concerns include: Nitrosamine formation.
What foods contain Sodium nitrate?
Packaged meats, baked goods, soft drinks and other long-shelf-life foods.
How can I avoid Sodium nitrate?
Check the ingredients list for "Sodium nitrate" or "E251", or scan the product with Digestoa to see if it's present before you buy.

Related preservative additives

Potassium nitrite (E249)Sodium nitrite (E250)Potassium nitrate (E252)Benzoic acid (E210)Sodium benzoate (E211)Potassium benzoate (E212)

Risk ratings reflect Digestoa's editorial assessment synthesising EFSA/IARC opinions and peer-reviewed research. Informational only — not medical advice.