Specifications Bleaching Earth for Waste Oil Refining 1)Free acid:<=0.20% 2)Moisture: <=10. ... odorless,tasteless,non-toxic3)Usage:♦Used for decoloring,refining and purifying minerals,such as lubricating oil,diesel oil,paraffin wax,gasoline,grease, ... kerosene,white oil,vaseline,etc.♦Used for ...