Specifications Bleaching Earth for Waste Oil Refining 1)Free acid:<=0.20% 2)Moisture: <=10.0% ... ,non-toxic3)Usage:♦Used for decoloring,refining and purifying minerals,such as lubricating oil,diesel oil,paraffin wax,gasoline,grease,kerosene,white ... for recycling and regeneration of industrial waste oil,such as machine oil,lubricating oil,used oil,etc.♦Decoloration and refinement of edible animal ...