1.2.3-benzotriazole (made by reaction of o-phenylenediamine and sodium nitrite and hydrochloric acid)

Process description: The reaction of o-phenylenediamine and sodium nitrite and hydrochloric acid produces the main product 1,2,3-benzotriazole. For this purpose, the process consumes hydrochloric acid, ammonia, caustic soda (50%), calcium oxide, sodium nitrite, titanium dioxide, chromium oxide, and o-phenylenediamine. Utilities consumed comprise thermal energy, electricity, unspecific inorganic chemical, cement, and disposal of cement. Sodium chlorate is produced as by-product. Utility demands in form of thermal energy and electricity are estimated according to the chemical park in Gendorf. For each kg of chemical product, 1.2 MJ electricity and 2 MJ thermal energy are required. A conversion rate of 95% is assumed. Process wastes are treated in municipal waste incinerators. Dataset type is technology-specific (simplified extension layer). Allocation type is allocation via price. In case of energy co-production, allocation via avoided burden is applied for the co-produced energy. CAS RN is 95-14-7. All datasets are based on the attributional LCA approach and the methodology defined in the cm.chemicals methodology document.