Polystyrene / syndiotactic (made by polymerization of styrene under nitrogen )

Process description: The polymerization of styrene under nitrogen produces the main product polystyrene, syndiotactic. For this purpose, the process consumes hydrogen, caustic soda (50%), methanol, ammonia, hydrochloric acid, calcium oxide, titanium dioxide, chromium oxide, styrene, and nitrogen. Utilities consumed comprise cooling water, thermal energy, steam, electricity, inert gas, process water, unspecific inorganic chemical, cement, and disposal of cement. Dataset type is technology-specific (extension layer). Allocation type is no allocation needed in this unit process. In case of energy co-production, allocation via avoided burden is applied for the co-produced energy. CAS RN is 28325-75-9. All datasets are based on the attributional LCA approach and the methodology defined in the cm.chemicals methodology document.