Calcite (Calcium Carbonate) Chemical CaCo3 96.0% MgCO3 02.7% Fe2O3 <0.1% Moisture <0.2% LOI 42.5% Physical   MC2 MC5 Specific Gravity 2.7 2.7 pH of Sat. solution 9.0 9.0 Oil Absorption 21 17 Particle size 95% 2 5 below uM Top Cut uM 10 10 Bulk Density Gm/litre 490 750 Mineral used in Plastics Major Resins Functions ABS, fluoroplastics, polyolefins, PP,PS, PVC,epoxy, phenolic, TPES, PU Most widely used filler; improves surface finish; controls viscosity; increases flexural strength Examples of Mineral Loadings in Plastics Plastic/ Product Loading (Wt.%) Flexible PVC 17-38% PVC pipe 30% PVC floor tile 44-80% TPES SMC/BMC 67% PP 30-40% Back