Casein sodium salt is widely used in the food industry as a protein source and emulsifier. It enhances the texture and stability of products like processed cheese, coffee creamers, and baked goods. In the pharmaceutical industry, it serves as a binder in tablet formulations, ensuring proper drug release. Additionally, it is utilized in cosmetics and personal care products for its film-forming and moisturizing properties, improving skin and hair conditioning. Its adhesive properties also make it valuable in industrial applications, such as in paper coatings and glues.