The reaction between ClO and OClO (1), ClO+OClO+M⇄Cl2O3+M (1,-1) has been studied using the molecular modulation technique at 226K over the pressure range 4.8-29.0 torr. The reaction has a strong pressure dependence and the thermolecular rate constant obtained at this temperature is k1=(2.8¿2.2)¿10-31 cm6 molecule-2 s-1

The importance of the reaction is discussed in the context of the large ozone depletions observed in the Antarctic springtime. An explanation for the unexpected behavior observed in earlier studies of the OClO/NO2 system is also given. ¿American Geophysical Union 1990