Description
- Identity and Properties: Sodium benzoate is the sodium salt of benzoic acid (C6H5CO2Na), with a formula weight of 144.10 and a white, hygroscopic powder appearance.
- Preservative Function: It is widely used to inhibit the growth of harmful bacteria, mold, and yeast, helping to extend shelf life in various products.
- Common Food and Beverage Uses: Because it dissolves easily in liquids, it is used to preserve acidic foods and beverages such as carbonated sodas, bottled fruit juices, dressings, pickles, and condiments.
- Cosmetic and Pharmaceutical Uses: Beyond foods, sodium benzoate serves as a preservative in cosmetics, skincare products, and pharmaceutical medications.
- DIY Considerations: For DIY or artisanal products, it extends shelf life but activates only in acidic formulations with pH below 4.5, making it suitable for acidic condiments, syrups, lotions, shampoos, and liquid soaps.
Syn: Benzoic acid, sodium salt









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