Propylene

Propylene is a colorless, gaseous hydrocarbon. It is a petrochemical feedstock used primarily in the manufacture of plastics via polypropylene or cumene. It is also used to produce propylene oxide, acrylic acid and isopropanol. Marathon Petroleum LP (MPC LP) produces three grades of propylene at its refineries: refinery grade (RGP), chemical grade (CGP), and polymer grade (PGP), varying in purity from approximately 65 percent propylene to more than 99 percent propylene.

Production Information
MPC LP generates saleable propylene from five of its six refineries. Propylene is produced in the refinery cracking units that upgrade heavier feedstocks into light products, such as gasoline and distillate. Cokers also create a propylene by-product. See the specific locations and grades produced at each refinery in the table below.

Transportation
MPC LP transports propylene from the refineries via pipeline, rail and transport truck. It must be stored and transported in pressurized containers to keep the product in a liquid state. Since all transportation modes are not available at all facilities, the table below illustrates MPC LP's current logistical capabilities.

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