Kaolinite

Kaolinite (CAS 1318-74-7) is a naturally occurring aluminosilicate clay mineral used as a functional filler, coating agent, and rheology modifier.

Where is Kaolinite used?

• Paper and board: coating pigment that improves printability, brightness, and surface uniformity
• Rubber: reinforcing filler in tire sidewalls and industrial rubber goods for dimensional stability
• Pharmaceuticals: excipient in tablet formulations and topical preparations
• Agriculture: particle film coating on crops and carrier in pesticide products
• It provides opacity, viscosity control, and surface smoothness without altering the active chemistry.

Commercial specifications

• Particle size distribution and brightness levels vary by grade; calcined grades offer higher brightness
• Calcined grades provide lower moisture content for coating and rubber applications