Isophthalonitrile (made by ammoxidation of m-xylene)

Process description: The ammoxidation of m-xylene produces the main product isophthalonitrile. For this purpose, the process consumes caustic soda (50%), ammonia, hydrochloric acid, calcium oxide, titanium dioxide, chromium oxide, and m-xylene. 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 626-17-5. All datasets are based on the attributional LCA approach and the methodology defined in the cm.chemicals methodology document. Data quality flag: Methodology - the EF contains a positive (rather than negative) value for biogenic CO2 removals as the production method avoids the burden of carbon capture in the supply chain.