Join The Chlorine Institute


The Chlorine Institute (CI) founded in 1924, is a not-for-profit trade association of companies that are involved in the safe production, distribution and use of chlorine, sodium and potassium hydroxides and sodium hypochlorite, and the distribution and use of hydrogen chloride. Because of chlorine's nature and its widespread and varied use, the promotion of its safe handling has long been an accepted responsibility of its producers, packagers, distributors and users. The Institute is the focal point for their combined efforts.

The Institute has approximately 200 member companies located in the U.S., Canada, Mexico, Central and South America, Japan, and other overseas countries.

Download this slideshow to gain more knowlege on what CI does, CI's focus and strategic plan, member involvement, and more. 


Why Join CI?

Companies who join the Institute benefit from:


Membership Criteria

Any company engaged in the production, packaging, distribution or use of chlorine, sodium hydroxide, potassium hydroxide, sodium hypochlorite; the distribution and use of hydrogen chloride; or any company interested in the development and improvement of the chlor-alkali industry is eligible for membership. The four categories of membership are:

To download and view the membership brochure, please click HERE.

If you are interested in membership and would like to obtain an application and other pertinent membership materials please contact 703-894-4124 or download the application HERE.

For more information on membership, please contact us at