Brine solutions are concentrated mixtures of salt, typically sodium chloride, dissolved in water. They are commonly used in various industries, including food preservation, where they help to enhance flavor and extend shelf life. Brine is also essential in processes like de-icing roads during winter, as it lowers the freezing point of water. In addition to food and de-icing, brine solutions play a crucial role in water treatment and oil extraction. In water treatment, they help remove impurities, while in oil extraction, they assist in the separation of oil from other materials. Overall, brine solutions are versatile and widely utilized.