Stain, complexes hydrogenation with

Model reactions in homogeneous solution indicate that the bleach reaction itself is a multistep process [66]. The reaction is first order with respect to both the active oxidant and the stain, and depends on the ionization state of the reactants one has to be dissociated, and the other one should be in undissociated form. A transition complex is formed, in which one hydrogen atom is involved, and finally the oxygen is transferred to the substrate to complete the reaction. The reaction is governed by the pH of the solution, and maximum bleach rates are achieved at a pH that is the mean of pKa (stain) and pKa (peroxy acid) [67]. 

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