Sodium benzoate
Sodium benzoate E211: what the food code means, where it appears, when benzene can form with vitamin C, and label-reading guidance.
Aliases and label clues
Overview
Sodium benzoate is the preservative behind the E211 food code. It appears most often in acidic beverages, sauces, condiments, and shelf-stable products, where it helps keep bacteria, yeasts, and moulds from growing.
Diet snapshot
What It Does in Food
Sodium benzoate is most commonly used as preservative and antimicrobial in packaged food.
Category
Preservative
Evidence and Regulatory Summary
FDA regulation allows sodium benzoate as a preservative up to 0.1% by weight, and EU systems identify the same additive as E211. EFSA has reviewed the child-behaviour evidence around food colors plus sodium benzoate without setting a new benzoate ADI from that study alone, while FDA still flags benzene formation as a formulation issue in some beverages that combine benzoate preservatives with vitamin C.
Diet Notes
Sodium benzoate matters most if you are trying to reduce heavily preserved drinks and sauces rather than follow one strict identity diet. People with dye or additive sensitivity concerns often track it as part of a broader packaged-food pattern.
Shopper Guidance
If a label says E211, treat it as sodium benzoate. Review it alongside benzoic acid, potassium benzoate, vitamin C, ascorbic acid, acidic drink categories, and synthetic colors instead of judging the preservative as an isolated word.
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Related topic hubs
Related ingredient profiles
Calcium propionate
Calcium propionate is a mold-inhibiting preservative commonly used in bread, buns, tortillas, and other packaged baked goods. It matters because it sits at the center of a real shelf-life tradeoff between softer bread products and simpler ingredient decks.
BHA
BHA is a synthetic antioxidant preservative added to fats and oils in frozen meals, breakfast cereals, cookies, candy, ice cream, meat products, and other packaged foods. It is useful for shelf life, but it also carries one of the most persistent reputational and toxicology debates in the food supply.
BHT
BHT is a synthetic antioxidant preservative used to protect fats and oils from oxidation in cereals, snacks, gum, and other shelf-stable foods. It matters because it often appears in the same product ecosystem as BHA and has become part of the wider re-evaluation of older synthetic preservatives.
Propylparaben
Propylparaben is a preservative used to slow spoilage in certain processed foods, especially where fat and moisture make shelf life fragile. It draws attention because the United States and Europe have treated the ingredient very differently.
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FAQ
Common questions
Is E211 the same as sodium benzoate?
Yes. E211 is the European additive number for sodium benzoate, a preservative used mostly in acidic drinks, sauces, condiments, and shelf-stable foods.
When can sodium benzoate form benzene?
Benzene formation is most relevant in certain acidic beverages when benzoate preservatives and vitamin C are present under unfavorable heat, light, or storage conditions.
Is E211 banned in Europe?
No. E211 is permitted in the EU, but shoppers may still review it because of beverage formulation questions, additive-sensitivity concerns, and personal preservative rules.
Should I avoid every food with sodium benzoate?
Not necessarily. It is more useful to compare heavily preserved drinks and sauces, especially when similar products without benzoates are easy to find.
Sources
This profile uses regulatory and journal sources and follows the IngrediCheck editorial policy.
Questions and Answers on Benzene in Soft Drinks and Other Beverages
Sodium Benzoate — Harmfulness and Potential Use in Therapies
Sodium Benzoate — eCFR 21 CFR 184.1733
EFSA evaluates Southampton study on food additives and child behaviour
European Commission Food Additives Database
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