CRN-E and CRN-T were characterized with reaction pathway identification and kinetic analyses. An analysis of equilibrium species distributions based on thermodynamic stability was not conducted, as ozonation of olefins is driven by fast kinetics. We employed Pathfinder and its built-in cost function to determine the most favorable reaction mechanisms. For the kinetic analyses we used microkinetic simulations with KiNetX's original Matlab code (see parameters in Section S2.7). Initial concentrations for both the pathway identification and kinetic analysis were set to 4.97•10 -5 M of ozone, 4.97•10 -3 M of the model olefin, and excess of water.