... filtration rate 3. Low oil retention 4. ISO. Activated bleaching earth for castor oil 1)Raw Material: High quality bentonite and ... 2)Feature: Sub-white powder,odorless,tasteless,non-toxic3)Usage:♦Used for decoloring, refining and purifying industrial oil, such as ... , paraffin wax, gasoline, grease, kerosene, white oil,vaseline, etc.♦Used for recycling and regenerating of industrial waste oil, such as ...