Crompton to Speak at Goldman Sachs Basic Materials Conference

Robert L. Wood, chairman and chief executive officer of
Crompton Corporation (NYSE: CK), will speak at the Goldman Sachs Basic
Materials Conference in New York City on Wednesday morning, May 18, at
8:00 a.m. Eastern daylight savings time.
   Persons wishing to hear Mr. Wood's presentation may participate in
a live webcast by clicking on the Investor Relations button at
www.cromptoncorp.com.
   Crompton Corporation, with 2004 sales of $2.5 billion, is a
producer and marketer of specialty chemicals and polymer products.
Additional information concerning Crompton Corporation is available at
www.cromptoncorp.com.