INTERMEDIATES AND PRODUCTS FORMED DURING THE PERIODIC REACTION BETWEEN PHENOL AND BROMATE

The course of the oscillatory reaction between phenol and bromate has been studied using HPLC for analyzing the intermediates and products f ormed from phenol before, during and after the oscillatory regime. The time evolution of 9 detected species has been followed; 6 of them wer e identified as 1.2-benzoquinone, 1.2-dihydroxybenzene, 2-bromophenol, 4-bromophenol, 2.4-dibromophenol, and 2.4.6- tribromophenol, the othe rs are supposed to be bromoderivatives of 1.2-dihydroxybenzene and 1.2 -benzoquinone. In the light of our results some unidentified species l isted in the skeleton mechanisms suggested earlier for explaining the oscillatory behavior could be specified.