Used as a preservative in food and beverages due to its ability to inhibit the growth of mold, yeast, and some bacteria. It is particularly effective in acidic environments, making it suitable for use in fruit juices, soft drinks, and pickled products. Also utilized in cosmetic formulations to extend shelf life by preventing microbial contamination. Its calcium content adds mild nutritional value, though not its primary function. Stable in a wide range of pH conditions, it offers formulation flexibility in both food and personal care products.