E262 Sodium Acetate – Food Additive Explained
E262 is an approved food additive (sodium acetate and sodium diacetate) used as a preservative and acidity regulator in a wide range of food products.
Things worth knowing about "E262"
E262 is an approved food additive (sodium acetate and sodium diacetate) used as a preservative and acidity regulator in a wide range of food products.
What is E262?
E262 is the EU designation for sodium acetate (E262i) and sodium diacetate (E262ii). These are sodium salts of acetic acid, commonly used in the food industry as preservatives, acidity regulators, and flavour enhancers. Sodium acetate also occurs naturally in small amounts in certain foods and is generally considered well-tolerated.
Chemical Properties
Sodium acetate (CH₃COONa) is the sodium salt of acetic acid. It appears as a white, crystalline powder and dissolves readily in water. Sodium diacetate is a compound of sodium acetate and acetic acid, with a characteristic sour smell and taste reminiscent of vinegar.
Uses in Food
E262 is used in a wide variety of food products, including:
- Bread and baked goods (to extend shelf life and prevent mould growth)
- Crisps and savoury snacks (as a flavouring agent with a vinegar-like taste)
- Ready meals and convenience foods
- Deli salads and marinades
- Meat and fish products
Mechanism of Action
As a preservative, E262 inhibits the growth of bacteria, yeasts, and moulds by lowering the pH of the food and creating an acidic environment. Acetic acid and its salts exert antimicrobial activity because undissociated acetic acid can penetrate the cell membranes of microorganisms and disrupt their metabolism. As an acidity regulator, E262 helps control the sourness of food products and improves both shelf life and flavour.
Safety and Tolerability
E262 is considered safe by the European Food Safety Authority (EFSA). Sodium acetate is a naturally occurring intermediate in human metabolism and is readily broken down by the body. EFSA has not established an acceptable daily intake (ADI) for sodium acetate, as it is classified as safe under normal conditions of use. However, individuals with sodium sensitivity or high blood pressure should be aware that sodium acetate contributes to overall sodium intake.
Possible Intolerances
In sensitive individuals, high intake of acetic acid-containing substances may cause mild gastrointestinal discomfort. Allergic reactions to E262 are very rare and have rarely been documented. People with a known intolerance to acetic acid should avoid products containing E262.
Labelling Requirements
Under EU food law, E262 must be listed in the ingredients of food products, either as E262, sodium acetate, or sodium diacetate. This allows consumers to make informed purchasing decisions.
References
- European Food Safety Authority (EFSA): Re-evaluation of acetic acid, lactic acid, citric acid and their ammonium, sodium, potassium and calcium salts as food additives. EFSA Journal, 2019.
- European Commission: Regulation (EC) No 1333/2008 on food additives.
- Carocho, M. et al.: Adding molecules to food, pros and cons: A review on synthetic and natural food additives. Comprehensive Reviews in Food Science and Food Safety, 2014.
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Related search terms: E262-en