... decoloring power 4)refine vegetable oil Refine Vegetable Oil White Clay1)Raw Material:High quality bentonite & concentrated sulfuric ... be used for decolorization and purification.Can remove harmful pigment,aflatoxin,phosphatide,saponin,colloid,cotton acid from oil to ... minerals(such as diesel,kerosene,gasoline,grease,paraffin wax,white oil,lubricating oil,Vaseline,etc.).♦Recycling and regeneration of ...