The Essential Role of Chlor-Alkali Electrolysis in Our Daily Lives


thyssenkrupp nucera stands as a global leader in chlor-alkali electrolysis with more than 60 years of experience and more than 10 GW installed capacity. Chlor-alkali electrolysis, which produces chlorine, hydrogen and caustic soda, is a fundamental industrial process integral to our daily lives. Let´s delve into significant application areas and the diverse end products that rely on chlorine.

Exploring Application Areas of Chlor-Alkali Electrolysis

What are the key application areas of chlor-alkali electrolysis? Through the process might not seem familiar, the applications are widely recognized. 


  • Water Treatment and Disinfection: One of the most vital applications of chlorine, produced via chlor-alkali electrolysis, is in water treatment. Chlorine is an essential disinfectant used to purify drinking water and treat wastewater. It helps eliminate harmful pathogens, ensuring safe water supply for human consumption and environmental protection.


  • Chemical Manufacturing: Chlorine and caustic soda are critical raw materials in the chemical industry. Chlorine is used in the production of various organic and inorganic chemicals. For instance, it is instrumental in manufacturing hydrochloric acid, which is used in numerous industrial processes. Caustic soda, on the other hand, is vital for producing paper, detergents, and a host of other chemicals.


  • Pharmaceuticals: The pharmaceutical industry heavily relies on chlor-alkali products. Chlorine is a key ingredient in the synthesis of numerous pharmaceuticals, including antiseptics, medications, and intermediates for drug production. Caustic soda is used in various pharmaceutical manufacturing processes as well.


  • Textiles: In the textile industry, caustic soda is used in processes like mercerization, which improves the strength, dye affinity, and luster of cotton fibers. Chlorine is also used in bleaching textiles, ensuring they are clean and free from natural pigments and impurities.


  • Agriculture: Chlorine compounds, particularly chlorinated pesticides, play a significant role in agriculture. These compounds help in controlling pests and diseases, thereby enhancing crop yields. Additionally, caustic soda is used in the production of herbicides.


  • Food Processing: The food industry utilizes chlorine for sanitation purposes. It is used to disinfect equipment, sanitize food-contact surfaces, and treat water used in food processing, ensuring that food products are safe for consumption. Caustic soda is employed in cleaning and peeling fruits and vegetables.

Familiar End Products Using Chlorine

Although the application areas might seem distant from everyday life, we all occasionally – if not daily – use end products derived from chlor-alkali electrolysis.


  • Polyvinyl Chloride (PVC): One of the most well-known end products of chlorine is polyvinyl chloride (PVC), a versatile plastic used in a wide range of applications. PVC is found in pipes, cables, packaging materials, and even medical devices, thanks to its durability and versatility.


  • Solvents: Chlorine is a key component in the production of solvents like carbon tetrachloride, trichloroethylene, and chloroform. These solvents are used in cleaning, degreasing, and as intermediates in chemical synthesis.


  • Bleach: Household and industrial bleach, primarily composed of sodium hypochlorite, is another significant end product of chlorine. Bleach is widely used for cleaning, disinfecting, and whitening purposes.


  • Epoxy Resins: Chlorine is used in producing epoxy resins, which are essential in making coatings, adhesives, and composite materials. These resins are valued for their strong adhesive properties and chemical resistance.


  • Pharmaceuticals: As mentioned earlier, chlorine is used in producing various pharmaceuticals. Notable examples include antibiotics, antiseptics, and anti-inflammatory drugs, which play critical roles in healthcare.


  • Insecticides and Herbicides: Chlorinated compounds are used to manufacture a variety of insecticides and herbicides, which are crucial for pest control and agricultural productivity.

Profound Impact on Our Daily Lives

Chlor-alkali electrolysis is a cornerstone of modern industry, supplying essential chemicals that power numerous applications and products. From ensuring clean water and effective pharmaceuticals to producing versatile plastics and vital agricultural chemicals, the impact of chlor-alkali electrolysis on our daily lives is profound and far-reaching. As industries continue to innovate, the significance of these processes and products will undoubtedly grow, highlighting the enduring importance of chlor-alkali electrolysis in our world.