log(Cl/S) as function of 12+log(S/H). Black squares and blue circles represent SFGs and H II regions of the DESIRED-E sample, for which Cl and S abundances have been calculated using the ICF scheme by Izotov et al. (2006). The dotted red line represents the mean log(Cl/S), while the solid one corresponds to the linear least-squares fit to the points. The dashed black lines and grey bands are obtained from the solar 12+log(S/H) and Solar System log(Cl/H) ratios and their associated uncertainties recommended by Asplund et al. (2021) and Lodders & Fegley (2023), respectively.