... 1.5%Density≥4.2 g/cm³FeO3≤0.5%Water Soluble≤0.1%Al2O3≤1%Moisture≤1.0%CaCO3≤6 ... .0%Humidity≤0.3%PolymerizationNo PolymerizationPH in water≤10%StabilityStableCalcium Soluble in Water (Ca+2)≤250 ppmSolubility in WaterInsolubleViscosity (cps ... . And, it as filling/padding & carrier materials mainly used for water-based paints, printing inks, plastics, rubber, paper, pharmaceuticals, ceramics, cosmetics, ...