Rate constant and products of the reaction Cl + CS 2 in air

Abstract

A steady-state system involving the photolysis of Cl 2 as a source of Cl has been used to investigate the reaction of Cl with CS 2 at 293 ± 3 K in a 420 l reaction chamber coupled to FTIR and mass spectrometers. Using a relative rate technique, the measured effective rate constant was found to be dependent on the total pressure and mole fraction of O 2 present in the system. In 760 Torr synthetic air, the overall rate constant for the Cl + CS 2 reaction is(0.83 ± 0.17) × 10 −13 cm 3 molecule −1s −1. SO 2, COS and COCl 2 are the main reaction products.