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    This works investigates the chlorination and bromination of two rubber and polymer related chemicals, which have emerged as relevant water contaminants, i.e. 1,3-di-o-tolylguanidine (DTG) and 1,3-diphenylguanidine (DPG).Kinetic constants at different pH values were obtained and modelled, taking into account the pK a values of DTG/DPG and HClO, showing that the maximum reaction rate (k app

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