Bentonite, sodium-activated, is a type of clay rich in montmorillonite minerals, which undergoes a process to increase its sodium content. This alteration enhances its swelling and adsorptive properties, making it a highly effective thickener and gel-forming agent. Sodium bentonite is widely used in drilling muds, foundry sands, and as a binder in various industrial applications. Its ability to absorb liquids and form stable gels makes it invaluable in cosmetics, agriculture, and as a component in the manufacturing of ceramics and paper products.