The Chlorine Institute (CI) founded in 1924, is a technical trade association of companies engaged in the safe production, distribution, and use of chlor-alkali chemicals including chlorine, sodium and potassium hydroxides, and sodium hypochlorite, and the distribution and use of hydrogen chloride.

CI and its members are committed to ensuring the safe and proper handling of the industry's products throughout the value chain, by developing and sharing technical information, training and best practices for the industry, its customers, emergency responders and the community.

Chlorine chemistry plays a critical role in meeting many of society's most basic needs, enabling scientists to pioneer advances in medicine and public health, agriculture, transportation, manufacturing, telecommunications, national security, renewable energy and other aspects of modern life.