The explosion limits of allyl chloride in different oxygen nitrogen mixtures were investigated, and the operating margin of oxygen content in the gaseous phase of a reactor was discussed. The results of reaction temperature and oxygen content trials in the gas phase of the epoxidation of ally! chloride with hydrogen peroxide over a titanium silicate (TS-1) catalyst are presented. The trials were carried out under atmospheric pressure and in the presence of methanol as a solvent. The influence of the following technological conditions and parameters on the course of epoxidation was examined: catalyst concentration, molar ratio of ALC/H2O2, solvent concentration, and feeding method. The conditions and parameters at which the functions describing the process reached the optimal and safe values were determined. (C) 2014 Elsevier Ltd. All rights reserved.