Calcined kaolin

Calcined kaolin (CAS 92704-41-1), also marketed under trade names such as Satintone 1 and M 100, is a thermally processed aluminum silicate clay used as a functional filler and rheology modifier across industrial manufacturing.

The calcination process drives off hydroxyl groups, producing a harder, more chemically inert material than standard hydrous kaolin. In coatings and paints, it improves opacity, controls sheen, and reduces the demand for titanium dioxide.

Paper and board manufacturers use it as a coating pigment and filler to enhance printability, brightness, and surface smoothness in offset and flexographic printing substrates. This ensures high-quality finishes for various commercial uses.

Plastics and rubber compounders incorporate it to improve dimensional stability, stiffness, and electrical resistance in cable insulation and molded components. It serves as a critical component in high-performance industrial materials.

Adhesive and sealant formulators rely on it to adjust viscosity and extend formulations without compromising bond performance. This versatility makes it a staple in construction and automotive manufacturing sectors globally.

Calcined kaolin is supplied as a dry white powder in a range of particle size distributions to suit different processing requirements. Technical and industrial grades are the standard market offering for most chemical buyers.

Specific surface area and brightness specifications vary by application to ensure optimal performance in the final product. Bulk bags and multi-wall paper sacks are the typical packaging formats for industrial supply volumes.