Used as an antacid in pharmaceuticals to neutralize stomach acid and treat conditions like heartburn, acid indigestion, and upset stomach. It works by buffering gastric acid without producing gas or affecting acid secretion.

Also employed as a stabilizer in plastics, especially polyvinyl chloride (PVC), where it helps prevent degradation during processing by absorbing hydrogen chloride. It can also be used in other polymers like polypropylene and polyethylene.

Applied in environmental technologies as an adsorbent for removing anions such as phosphate, sulfate, nitrates, and heavy metal contaminants from wastewater, leveraging its ion-exchange and absorption properties.

Utilized in catalysis, either as a catalyst support or as a precursor for mixed metal oxides in various chemical reactions, including aldol condensation and transesterification for biodiesel production.

Found in cosmetics and personal care products as an absorbent and opacifying agent.