Propylene is a hydrocarbon compound in the form of gas at normal temperature and pressure, therefore, to make it easier to store and handle it is given a certain pressure to convert into liquid form. Propylene is used as a feedstock in the manufacture of polypropylene, acrylic acid, oxo alcohol and propylene oxide.

Propylene is produced in the Refinery Unit Pertamina III Plaju fluidized catalytic cracker (FCC) refinery which is then further processed into Polytam (Polypropylene Pertamina). Propylene is also produced in the residue catalytic cracker (RCC) Refinery Unit Pertamina VI Balongan with a production capacity 230 KTA/year.