Among the analyzed ecoinvent datasets, ethylene dichloride production and methyl tert-butyl ether production stand out 25 because they contain no data of water, electricity, heat, blanketing nitrogen or wastewater treatment requirements at all, neither derived from process-specific data nor from a proxy approach. They do, however, contain the proxy data for infrastructure demands, which is the case for nearly all chemical 30 datasets in the ecoinvent database. It is unclear why some of the inputs or outputs have not been added by either using the proxy approach or specific data, as literature suggests that at least some of these inputs and outputs exist . Such inconsistencies in the implementation of the proxy 35 approach have largely been removed in the latest revision of the ecoinvent data, where some of the older datasets have been updated with the more recent approach. Both approaches still co-exist in the current ecoinvent database v3.8. They share the main weakness that the actual input to the chemical site 40 at Gendorf is natural gas, which is subsequently transformed into electricity and heat at the site, while both the old and new proxy approach in ecoinvent assume this input to be heat. This does not only lead to a mismatch in terms of the energy forms and fuels, but also results in the double-counting of transformation losses associated with the combustion of fuels, and is also very specific to the Gendorf site.