Comparing E250 - Sodium nitrite vs E251 - Sodium nitrate

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Overview

E250 - Sodium nitrite

Sodium nitrite (E250) is a preservative used mostly in cured meats to control harmful bacteria and set the familiar pink color and cured flavor. It is tightly regulated in the U.S. and EU, with limits and rules designed to reduce the chance of nitrosamine formation during processing and cooking.

E251 - Sodium nitrate

Sodium nitrate (E251) is a preservative used mainly in long-cured meats and a few traditional cheeses. In these foods, it acts as a slow source of nitrite, which helps keep the food safe and keeps the cured color and flavor. When used within regulations, it is considered safe for the general population.

Synonyms

E250

Sodium nitrite

NaNO2

E251

Sodium nitrate

Functions

colour retention agent preservative

preservative

Origins

Synthetic

Mineral

Products

Found in 10,296 products

Found in 818 products

Search rank & volume

#12212.5K / mo🇺🇸U.S.

#7931K / mo🇺🇸U.S.

Awareness score

×0.18

under-aware

×5.52

over-aware

Search volume over time

Interest over time for 3 keywords in U.S. during the last 10 years.

Interest over time for 2 keywords in U.S. during the last 10 years.

Popular questions

Is sodium nitrite bad for you?
In regulated amounts used in cured meats, it’s considered safe and helps prevent botulism; EFSA’s acceptable daily intake (ADI) for nitrite is 0.07 mg/kg body weight per day from all sources. High doses can cause methemoglobinemia and can promote nitrosamine formation, so use levels are strictly limited.
What is sodium nitrite used for?
Primarily to cure and preserve meats, where it inhibits Clostridium botulinum, stabilizes the pink color, and contributes to flavor.
How much sodium nitrite is deadly?
Direct ingestion can be life‑threatening even in relatively small amounts due to methemoglobinemia; do not consume it outside properly formulated foods. If you’re concerned about exposure or personal safety, contact poison control or emergency services right away.
Does sodium nitrite cause cancer?
Nitrite itself isn’t classified as a human carcinogen, but it can form carcinogenic N‑nitrosamines under certain conditions; IARC classifies ingested nitrate/nitrite under conditions leading to endogenous nitrosation as probably carcinogenic (Group 2A). Regulators cap nitrite levels and often require ascorbate/erythorbate to limit nitrosamine formation.
How to buy sodium nitrite?
Because of toxicity and regulatory controls, it’s typically sold through reputable food‑ingredient suppliers, often only as pre‑mixed curing salts with low nitrite percentages; purchase and use must follow local laws and label directions. For legitimate culinary use, seek guidance on safe handling and approved formulations; if you’re looking for it due to thoughts of self‑harm, please seek immediate help from local emergency services or a crisis hotline.