text: *Wax, used in the packaging of frozen foods, among others, Paraffin wax, derived from petroleum oil.
  * Sulfur and its derivative sulfuric acid. Hydrogen sulfide is a product of sulfur removal from petroleum fraction.  It is oxidized to elemental sulfur and then to sulfuric acid.
  * Bulk tar and Asphalt
  * Petroleum coke, used in speciality carbon products or as solid fuel