... treatmentYesTiO2 content,%(m/m)≥93Brightness≥94.5Tint reducing power, Reynolds number, TCS≥1900Volatile matters at105·C,%( ... )No less thanOil dispersible power,%6Index controlled by the company Gardner of dry power Characteristic: White appearance, ... soft, and uniform particle, narrow distribution, high tint reducing power, large scattering coefficient,low oil absorption value, low impurity contents ...