... iron content It has an outstanding fire retardant, electric insulation, chemical inertness and middle surface area.PropertiesWith high main content, narrow ... , γ rays, as well as effectively improve the product surface gloss and surface hardness.Applicationspaints, printing inks, coatings, plastics, rubber, chips, ... ,%,≤ 0.20 0.20 Fe % 0.004 0.006 Oil absorption g/100g 15-25 15-25 Water Soluble Matter ...