Uncoated Ground Calcium Carbonate A high brightness and purity crystalline Calcium Carbonate produced from selected Calcite. Very low oil absorption, easily dispersible, imparts good rheological properties. CHEMICAL ANALYSIS : Calcium Carbonate (CaCO3) Min. 98.50% PHYSICAL PROPERTIES Particle Size (d97%) Microns 6 Mean Particle Size ( d 50 % ) Microns 1.7 Moisture Max. 0.20%