High whiteness filler aluminium hydroxide with very less black point,used as the retardant agent in plasitc,latex industries,pater making,paints,pigments,drying agent,especially suitable for making artificial marble/solid surface etc.. ITEM Al(OH)3 % SiO2 % Fe2O3 % Na2O % Oil absorption ml/100g Whiteness D50 Micron +325 Mesh % Moisture % HWF1 99.5 0.08 0.02 0.3 55 97 1 0.1 0.5 HWF2 99.5 0.05 0.02 0.4 50 96 1-3 1 0.4 HWF5 99.6 0.05 0.02 0.25 40 96 3-6 3 0.4 HWF8 99.6 0.05 0.02 0.3 33 96 7-9 4 0.3 HWF10 99.6 0.03 0.02 0.3 33 96 8-11 4 0.3 WHF14 99.6 0.03 0.02 0.3 32 95 13-18 12 0.3 HWF20 99.6 0.03 0.02 0.25 32 94 18-25 30 0.2 HWF25 99.6 0.03 0.02 0.3 32 93 22-28 -- 0.2 HWF75 99.6 0.03 0.02 0.2 40 92 75-90 -- 0.1