A high-temperature syngas conversion process is operated in Secunda in a series of 10 Sasol advanced Synthol (SASTM) reactors at high pressure with the aid of an iron-based Fischer-Tropsch catalyst at about 350 °C to yield primarily C1 – C20 range hydrocarbons. The process also produces water and oxygenated hydrocarbons which are then purified and marketed. The C2 stream is split into ethylene and ethane. The ethane is further cracked to yield additional ethylene which are then converted into polyethylene for the polymer business. Propylene from Secunda and Sasolburg plants are also converted into high-value products such as polypropylene, butanol, butyl acrylate and ethyle acrylate. The acrylates are used to make superabsorbent polymers which are used in diapers. Through proprietary technology 1-hexene, 1-octene and 1-pentene are recovered from the oil stream. International customers use these as co-monomers for making speciality grade polymers. Some of the higher olefins (C11 – C12) are converted into detergent-range alcohols.