It might be argued that OSAZ is an insignificant species by virtue of its low concentration upon equilibrium. However, its pH neutrality, its dependence on ionic strength, its dimerization activation energy, and its thermodynamic favorability in the reaction zone all strongly suggest that OSAZ is the key reactive species in the dimerization mechanism and therefore conditions affecting its formation influences the rate of dimerization. Hence, regulating its concentration influences the dimerization mechanism.