Sodium bentonite is a highly swelling natural clay, available as a fine powder and in granular form.

Sodium bentonite is a highly plastic colloidal clay found as a naturally occurring alteration of volcanic ash.

Sodium bentonite is a natural sealant and is used for sealing stock and recreational ponds, dairy and sewage lagoons, and city landfills.

Sodium bentonite is used to line the base of landfills to prevent migration of leachate, for quarantining metal pollutants of groundwater, and for the sealing of subsurface disposal systems for spent nuclear fuel.

Sodium bentonite has proven to be one of the most effective sealants available in the industry today. Sodium bentonite is a 100% natural substance that has extremely unique properties.

When sodium bentonite comes into contact with water, sodium bentonite exhibits remarkable absorbing capacity, and is able to hold over ten times sodium bentonite's dry weight.

Additionally, as the bentonite clay swells, it forms a watertight barrier.

Because of these properties, sodium bentonite has a wide variety of possible applications that range from preventing seepage and leaks in small water bodies.

Sodium bentonite is environmentally safe, because it contains no chemicals, no additives, nothing toxic. Sodium bentonite expands when wet, absorbing as much as several times sodium bentonite's dry mass in water.

Because of the excellent colloidal properties of sodium bentonite, sodium bentonite is often used in drilling mud for oil and gas wells and boreholes for geotechnical and environmental investigations.