This book provides an understanding of the chemical principles, processes, and applications within the chlor-alkali industry and it can be used as a comprehensive resource for students, researchers, and professionals in chemical engineering and industrial chemistry fields. It covers a variety of subjects about chlorine and alkalis, their production and chemistry. The material covered in this book helps readers to understand the fundamental principles of the involved chemical reactions. It starts with an overview of the chlor-alkali industry and the involved processes followed by a discussion of the significance and end uses of these chemicals. In addition, an insight into the applied processes and technologies in the chlor-alkali industry, and their processing, storage, and handling are discussed. Details of the process such as the types of anodes and cathodes used in the chlor-alkali industry are discussed. The chemical engineering principles and practices adopted in this industry are another interesting topic that is covered in this book. Other important factors such as the issues for mercury cell technology in the chlor-alkali industry and new technologies such as membrane cell and diaphragm cell technologies are also covered. Finally, an insight into the cost savings in chlorine plants is provided by discussing the unique properties of titanium along with its uses in mercury, membrane, and diaphragm cell technologies.