8107 Calcium carbonate 1317-65-3 Polar Minerals Extenders / Fillers >> Calcium Carbonate, precipitated Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE SEALANT Polar's calcium carbonates are high purity, low surface area chalk type pigments targeted for use in thermosets, thermoplastics, paints and coatings, adhesives and sealants, rubber and other applications requiring excellent rheology and softness. These calcium carbonates are 99% pure CaCO3 and contain less than 0.1% crystalline silica. High purity calcium carbonate. Low surface area chalk type pigment used in thermosets, thermoplastics adhesives and sealants. Provides very good rheology and softness.