Time evolution of abundances of CS, SiO, SO, SO₂, SiS, and SiC under interstellar conditions T = 10 K, n_H = 2 × 10⁴ cm⁻³. (a) Accounting for all the newly computed chemical reactions in this work listed in Table 2 as well as the KIDA default network, and (b) only employing the KIDA default network of chemical reactions. The horizontal arrows illustrates the observed abundance of SO in TMC-1 (Lique et al. 2006) for comparison.