The reaction of thiodiglycol on metal-impregnated carbon Original Research Article

In order to investigate the reactive removal of persistent chemical warfare (CW) gases, active carbons, grade 80 CTC, and active carbon impregnated with cobalt(II), chromium(VI), nickel (II), cadmium(II) or copper(II) salts were saturated at room temperature with the vapours of thiodiglycol (TDG), a hydrolysis product of sulphur mustard. The carbons exposed to TDG were subjected to thermogravimetric analysis (TGA). The thermograms indicated the reactions of metal salts with the adsorbate, as was confirmed by GC-MS after extracting the reaction products from TDG-exposed carbon impregnated with a mixture of chromium(VI) salt and sodium hydroxide. The extractants used were dichloromethane and methanol. 1,4-Oxathiane and 1,4-oxathiane,4-oxide were the reaction products on Cr(VI) plus NaOH impregnated carbon.The reaction mechanisms are also proposed.