Hydrolysis of toxic organophosphorus esters. The behaviour of the perborate anion

Abstract

It has been observed that in the hydrolysis of the organophosphorus esters such as paraoxon 1 and ethyl p-nitrophenylmethylphosphonate (2), by aqueous sodium or phosphonium perborate, it is not possible to obtain a complete understanding of the results obtained if the perhydroxide anion is considered to be the sole nucleophilic reagent. In this work we investigate the possibility of perborate anion participation. We propose a new kinetic expression for this kind of hydrolysis taking into account the effectiveness of the perborate anion as a reactive entity.