Sodium Benzoate (E211)

Sodium benzoate is a widely used food preservative. It’s commonly used to help prevent the growth of yeast, mould, and certain bacteria — especially in acidic foods and drinks.

Quick facts

E-number: E211

What it does: Helps prevent mould/yeast growth and supports shelf-life in acidic products

Chemical formula: C₇H₅NaO₂

Naturally related compounds: Benzoic acid occurs naturally in small amounts in certain fruits and spices (for example, cranberries and some spices).

Why it’s used in food

Sodium benzoate is most effective in acidic products. In these conditions, it helps create an environment where spoilage microbes (like mould and yeast) struggle to grow.

Where you’ll commonly find it

Sodium benzoate is widely used in acidic foods and drinks, such as:

• pickles and condiments

• salad dressings (vinegar-based)

• carbonated drinks

• jams and fruit juices

Sodium benzoate + Vitamin C (ascorbic acid): what to know?

In some beverages that contain both benzoate salts (like sodium benzoate) and ascorbic acid (vitamin C), very low levels of benzene can form under certain conditions, especially with heat and light exposure.

Don’t confuse citric acid with ascorbic acid

These names sound similar, but they are different:

• Ascorbic acid = Vitamin C
• Citric acid is a different acid that contributes tartness and acidity, and is not vitamin C.

Citric acid occurs naturally in foods and is also commonly produced commercially via fermentation methods.

This section is here for transparency and general education, always check product labels and store products as directed.

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We believe in clear labels and informed choices. If you prefer to avoid certain ingredients, always check the ingredient list on the product page or label.

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This page is for general information only and is not medical advice. If you have specific health concerns or dietary requirements, please speak to a qualified healthcare professional.