CHLORINATION OF MONOCHLORODIMEDONE WITH CHLORAMINES .1. KINETICS OF THE CHLORINATION

The kinetics of monochlorodimedone (MCD) chlorination with sodium hypo chlorite (NaOCl), chloroisocyanurates (2Cl- and 3Cl-ICA), N-chlorosucc inimide (Cl-succinimide), and chloramine T and B were studied. The chl orination of MCD was recognized by a decrease in absorbance at 290 nm and at pH 7. Instantaneous chlorinations occurred with NaOCl and chlor oisocyanurates. The rate constants for the chlorination with Cl-succin imide and chloramine T and B were determined. The reactions were deter mined to be second order-first order in each reactant, and were depend ent on temperature. The observed second order rate constants at 15-deg rees-C for Cl-succinimide, and at 25-degrees-C for chloramine T and B were 1500, 61.8 and 41.5 M-1 . s-1, respectively.