log(Cl/O) as function of 12+log(O/H). Black squares and blue circles represent SFGs and H II regions of the DESIRED-E sample, for which Cl/O ratios have been calculated using the ICF(Cl) scheme by Izotov et al. (2006). Yellow stars represent the abundances obtained by Maas et al. (2016) and Maas & Pilachowski (2021) from spectral features of the HCl molecule in the L-band spectra of nearby M-giant and dwarf stars. The dashed black lines and grey bands are obtained from the solar 12+log(O/H) and Solar System log(Cl/H) ratios and their associated uncertainties recommended by Asplund et al. (2021) and Lodders & Fegley (2023), respectively.