Poly(methacrylic acid sodium salt) is widely used in various industries due to its unique properties. In the pharmaceutical sector, it serves as a key component in drug delivery systems, particularly in controlled-release formulations, where it helps regulate the release of active ingredients. Its ability to swell in water makes it valuable in personal care products like hydrogels and contact lenses, providing moisture retention and comfort. In water treatment, it acts as a dispersant and scale inhibitor, preventing the buildup of minerals in industrial systems. Additionally, it is utilized in the production of adhesives and coatings, enhancing their stability and performance. Its versatility and biocompatibility make it a crucial material in both industrial and medical applications.