Whiting p is also naturally occurring calcium carbonate. It exists in amorphous form where as calcite exists in crystalline form. Its amorphous form gives tremendous suspending powder in coatings. It is also known as Porbunder Whiting. Chemical Formula - CaCO3, MgCO3, CaMg, CO32. Physical Properties - Appearance - Creamish white powder Coarse particle on 240 mesh- max 0.5% Sp. gravity- 2.7 to 2.9 PH of 10% aqueous solution- 8.0 - 9.0 Oil absorption value- 15 to 20 Volatile matter- Max 1%. Purity as CaCO3- min 85% Chemical Composition - CaCO3 - 85.0% SiO2 - 1.10% Industrial Applications - Paints Industry, Rubber Industry, Plastic Industry, Pesticide, Other Uses