Sodium Benzoate E211
Sodium Benzoate E211 (CAS 330-95-0, C7H5NaO2) is a widely utilized food additive, primarily functioning as a preservative in various food and beverage applications.
Description
Sodium Benzoate, with the chemical formula C7H5NaO2, is the sodium salt of benzoic acid. It is a widely recognized food preservative, identified by the E-number E211 within the European Union's system of food additive numbering. This compound is synthesized by reacting benzoic acid with sodium hydroxide. Its efficacy as a preservative stems from its ability to inhibit the growth of bacteria, yeasts, and molds, particularly in acidic conditions (pH 2.5-4.0). The antimicrobial action is attributed to the undissociated benzoic acid, which can penetrate microbial cell membranes, disrupt their internal pH, and interfere with enzymatic processes essential for microbial survival and reproduction. Sodium benzoate is a white, odorless, crystalline powder or granular substance that is readily soluble in water. Its stability and broad-spectrum antimicrobial activity make it a valuable ingredient in maintaining product quality and extending shelf life within the food and beverage industry.
Applications
Sodium Benzoate E211 finds extensive use as a preservative across numerous industrial sectors, most prominently in the food and beverage industry. It is commonly incorporated into soft drinks, fruit juices, jams, jellies, salad dressings, pickles, and other acidic food products to prevent microbial spoilage and extend shelf life. Beyond consumables, it serves as a preservative in certain pharmaceutical preparations, particularly in liquid oral medications, and in cosmetic products to inhibit the growth of microorganisms and maintain product integrity. Additionally, it has applications in the pyrotechnics industry as a fuel in whistle mixes due to its ability to produce a whistling sound when ignited in specific formulations.
Storage & Handling
Store in a cool, dry, well-ventilated area away from incompatible materials. Keep container tightly closed. Avoid moisture. Handle with appropriate personal protective equipment to minimize dust generation and skin contact. Do not ingest. Ensure good industrial hygiene practices are followed.
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