Calcium Carbonate powder (coated and uncoated) is popularly used in many industries namely: Paper, Paint, Plastics, Rubbers, Cables, PVC compound or Masterbatchesâ?¦etc as a functional filler or additive. *) Specifications: Origin: Vietnam Calcium Carbonate: 98 % Magnesium MgO: 0.16% Silica SiO2: 0.01% Loss on Ignition: 43.08 % Moisture: 0.2 % Brightness: 94% Appearance: white powder Mesh: 100 -3200 Whiteness: up to 99% Useful: as filler PACKING: PP/PE bag, 25kg/50kg/Jumbo