E282

Calcium propionate, designated as E282 in the European Union, is the calcium salt of propionic acid. Its chemical formula is Ca(C3H5O2)2, giving a molecular weight of about 186 g/mol. It appears as a white, crystalline powder that is readily soluble in water and is produced by neutralizing propionic acid with calcium hydroxide.

As a food preservative, calcium propionate functions primarily to inhibit mold growth and some bacterial activity, thereby extending the shelf life of foods. It is widely used in bread and other baked goods, and is also found in dairy products, cheeses, processed fruits and vegetables, and certain cereals. In addition to its use in human foods, the compound is used as a feed additive to preserve stored animal feeds.

Regulatory status and safety considerations vary by region but are generally favorable. In many jurisdictions, calcium propionate is approved for use in foods under product-specific limits. Regulatory assessments, such as those by EFSA, have found it safe at typical dietary exposures and often designate an ADI as not specified. Consumers without specific sensitivities are unlikely to experience adverse effects from normal consumption; excessive intake may cause digestive discomfort in some individuals. It is not classified as a common food allergen.

Storage and handling standards emphasize keeping the material dry and protected from moisture. Calcium propionate is valued for its effectiveness, relatively low cost, and compatibility with a wide range of bakery and processed foods.