Spectrophotometric method for the parallel determination of 2,2′-dichlorodiethyl sulphide and 2-chloroethyl vinyl sulphide in the reaction of 2,2′-dichlorodiethyl sulphide with sodium 2-methoxyethoxide

Abstract

Application of the spectrophotometric method based on thymolphthalein for the parallel determination of 2,2′-dichlorodiethyl sulphide and 2-chloroethyl vinyl sulphide in the reaction between sodium 2-methoxyethoxide and 2,2′-dichlorodiethyl sulphide in 2-methoxyethanol, catalysed by diethylenetriamine, is presented. The suggested procedure permits the recording of the kinetics of this reaction although thymolphthalein reacts with both the starting reactant (2,2′-dichlorodiethyl sulphide) and the reaction intermediate (2-chloroethyl vinyl sulphide). Good agreement was found between this method and previously described methods for following this reaction.