Up-to-date information on scientific and technical achievements in use of asbestos and asbestos-free diaphragms and ion-exchange membranes in chlorine production industry hase been presented. Hazards connected with the use of asbestos have been discussed in the context of the legal ban on asbestos products use and the decree of the Minister of Economy on ways of their use and conditions of disposal. Methods of asbestos products disposal have been presented. Technical and economic conditions of the membrane electrolytic process of sodium chloride solution have also been discussed.