Sodium benzoate is the sodium salt of benzoic acid. It is an aromatic compound denoted by the chemical formula C7H5NaO2 with a molecular weight of 144.11. In its refined form, sodium benzoate is a white, odorless compound that has a sweet, astringent taste, and is soluble in water. Sodium benzoate has antimicrobial characteristics, and is typically used as a preservative in food products.
Sodium benzoate is supplied as a white powder or flake. During use it is mixed dry in bulk liquids where it promptly dissolves. Approximately 1.75 oz (50 g) will readily dissolve in 3 fl oz (100 ml) of water. In contrast, benzoic acid has a significantly lower water solubility profile. When placed in water, sodium benzoate dissociates to form sodium ions and benzoic acid ions. Benzoic acid is a we…
Some toxicity testing has shown sodium benzoate to be poisonous at certain concentrations. However, research conducted by the U.S. Department of Agriculture (USDA) has found that in small doses and mixed with food, sodium benzoate is not deleterious to health. Similar conclusions were drawn about larger doses taken with food, although certain physiological changes were noted. Based on this researc…
Sodium benzoate has been used in a wide variety of products because of its antimicrobial and flavor characteristics. It is the most widely used food preservative in the world, being incorporated into both food and soft drink products. It is used in margarine, salsas, maple syrups, pickles, preserves, jams and jellies. Almost every diet soft drink contains sodium benzoate, as do some wine coolers a…
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