Kaolin

Kaolin (CAS 1332-58-7), also known commercially as Bolus alba, is a naturally occurring hydrated aluminum silicate clay mineral processed for industrial use. It functions as a functional filler, coating pigment, and rheology modifier across a broad range of manufacturing sectors. In pulp and paper manufacturing, kaolin is applied as a coating pigment and filler to improve printability, brightness, and surface smoothness of finished sheets. Rubber compounders incorporate it as a reinforcing filler in tire sidewalls and molded goods.

Personal care formulators use it as an absorbent and texture-modifying agent in face masks, dry shampoos, and pressed powders. In construction materials, kaolin serves as a functional extender in paints and ceramic bodies. It is also used in cement-based products to control viscosity and reduce raw material costs. Kaolin is supplied as a dry powder in both calcined and water-washed grades, with calcined forms offering higher brightness for coatings.

Standard commercial grades include technical, ceramic, paper-coating, and rubber-grade specifications. Pharmaceutical and cosmetic applications are served by USP and BP-compliant grades, available in bulk bags or drums. These high-purity grades ensure safety and efficacy in sensitive formulations. Whether for industrial coatings or personal care products, this mineral remains a versatile and cost-effective solution for modern manufacturing needs.