INS 251
preservativesSodium Nitrate
Halal
Is INS 251 (Sodium Nitrate) halal?
Generally accepted as halal. Typically derived from plant or synthetic sources with no prohibited ingredients.
What to do
Safe to buy. This additive is permissible under Islamic dietary law.
Where is INS 251 used?
INS (International Numbering System) codes are maintained by the Codex Alimentarius Commission and used on food labels in many countries outside the EU. You will commonly see INS 251 on packaging from:
In the EU and UK, the same additive appears as E251. The ingredient, halal status, and sourcing considerations are identical — only the labelling system differs.
EU / UK equivalent: E251
INS 251 and E251 refer to the same food additive — Sodium Nitrate. If you are checking a product purchased in the UK or Europe, look for E251 on the label instead.
See full E251 halal guide →About INS 251
Chemical preservative
Sources / Derived From
- synthetic mineral salt
Foods that commonly contain INS 251
Frequently Asked Questions
Is INS 251 (Sodium Nitrate) halal?
INS 251 (Sodium Nitrate) is classified as Halal. Generally accepted as halal. Typically derived from plant or synthetic sources with no prohibited ingredients.
What is INS 251 used for?
INS 251 is used as a preservative - converts to nitrite to cure and preserve meats in food products.
What is the difference between INS 251 and E251?
INS 251 and E251 are the same additive — Sodium Nitrate. INS numbers are used on food labels in Australia, New Zealand, Malaysia, Singapore, Indonesia, India, and GCC countries. The E-number system (E251) is used in EU and UK markets. The halal status is identical regardless of which label system is used.
What foods contain INS 251?
INS 251 (Sodium Nitrate) is commonly found in: hard salami, dry-cured meats, some cheeses.
What is INS 251 made from?
INS 251 can be derived from: synthetic mineral salt.
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