Kinetics of the reactions of chlorine atoms with CH3ONO and CH3ONO2

The kinetics of the reactions of Cl atoms with CH3ONO and CH3ONO2 have been studied using relative rate techniques. In 700 Torr of nitrogen diluent at 295 +/- 2K, k(Cl + CH3ONO) = (2.1 + 0.2) X 10(-12) and k(Cl + CH3ONO2) = ( 2.4 +/- 0.2) x 10(-13) cm(3) molecule-1 s(-1). The result for k(Cl + CH3ONO 2) is in good agreement with the literature data. The result for k(Cl + CH3 ONO) is a factor of 4.5 lower than that reported previously. It seems likel y that in the previous study most of the loss of CH3ONO which was attribute d to reaction with Cl atoms was actually caused by photolysis leading to an overestimate of k(Cl + CH3ONO). (C) 1999 John Wiley & Sons, Inc.