Kaolin or China Clay is a native hydrated Aluminum Silicate formed by the hydrothermal degradation of granite, powdered and free from gritty particles by elutriation.It complyes with USP, EP, BP,it is used in various Pharmaceutical, cosmetic, veterinary and food industries .Kaolin is a known adsorbent, has lubricant property in powders and is therefore proposed as a lubricant in tablet formulations