For the ternary STS : sucrose system in 2 : 4 mass ratio, Scenario 2 (see Table ) was applied in the data analysis, and the KM-SUB model fit results are shown in Figure , exhibiting a good agreement with the kinetics measurement results. In this scenario, k SLR and k BR input parameters are pinned down by their empirical relationships with droplet ionic strength (eq 2 and eq S11, respectively), while the bulk-phase diffusion coefficients of both S 2 O 2- . were used to estimate the corresponding droplet viscosities, which are listed in Table .