The company produced specialty chemicals used for polymers, fire suppressants and retardants, pool and spa water purification systems and various other applications.

In 2005, Crompton merged with Great Lakes Chemical Corporation to become Chemtura.

It was listed on the New York Stock Exchange under CK ticker symbol.

[1] In 2005, Crompton merged with Great Lakes Chemical Corporation of West Lafayette, Indiana, to form Chemtura, headquartered in Philadelphia.

[1] Crompton's ticker symbol on the New York Stock Exchange was CK.