Ingredient ProfilePreservativeReviewed 2026-04-29

Sodium benzoate

Sodium benzoate E211: where it appears, when benzene can form with vitamin C, diet notes, and label-reading guidance.

Reviewed 2026-04-29|3 sources|Regulatory and Journal|Editorial standards

Aliases and label clues

Sodium benzoateE211benzoate preservative

Overview

Sodium benzoate is a preservative used in acidic beverages, sauces, condiments, and shelf-stable products. It keeps microbes down, which is why it remains common even when consumers increasingly associate it with older soft-drink controversies.

Diet snapshot

Gluten freeYes
VeganYes
Low FODMAPYes
Dairy freeYes

What It Does in Food

Sodium benzoate is most commonly used as preservative and antimicrobial in packaged food.

preservativeantimicrobial

Category

Preservative

Evidence and Regulatory Summary

The ingredient remains permitted, but benzene formation in certain beverage conditions and wider gut-health conversations keep sodium benzoate in the 'watch closely' bucket for many label readers. It is a legacy preservative with recurring modern questions.

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

Read sodium benzoate alongside the rest of the formula. The ingredient can be more meaningful in brightly colored, acidic beverages than in one isolated condiment, which is why category context still matters.

FAQ

Common questions

What does E211 mean on a food label?

E211 is the European additive number for sodium benzoate, a preservative used mostly in acidic drinks, sauces, 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.

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.

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