Daniel S. Sanders of ExxonMobil Chemical Company Elected to Arch Chemicals' Board of Directors.

NORWALK, Conn. -- Daniel S. Sanders, President of ExxonMobil Chemical Company of Houston, Texas, has been elected to Arch Chemicals' (NYSE:ARJ) Board of Directors, effective immediately.

A chemical industry veteran with extensive international experience, Mr. Sanders recently served as Chairman of the Board of the American Chemistry Council (ACC) and is also a past Chairman of the Society of Chemical Industry, American Section. Mr. Sanders played a key role in 2002 in championing the adoption by the ACC of a formal security code that requires all member companies to take measures to enhance both their physical and cyber security.

"We at Arch are delighted to have one of the most widely respected global chemical industry leaders on our board," said Michael E. Campbell, Arch Chemicals' Chairman, President and Chief Executive Officer. "I worked closely with Dan at the American Chemistry Council, and I was impressed with his leadership skills and by the depth of his knowledge of the many dynamic forces facing our industry, from environmental and safety issues to increased global competition."

With Mr. Sanders' election, there are now eight individuals serving on Arch's Board, seven of whom are outside directors. In addition to Messrs. Campbell and Sanders, the board members include Richard E. Cavanagh, President and Chief Executive Officer, The Conference Board, Inc.; John W. Johnstone, Jr., retired former Chairman, Olin Corporation; H. William Lichtenberger, retired former Chairman, Praxair, Inc.; Michael O. Magdol, Vice Chairman, Fiduciary Trust Company International; Dr. John P. Schaefer, President, Research Corporation; and Dr. Janice Teal, Group Vice President and Chief Science Officer of Avon Products, Inc.

A graduate of the University of South Carolina with a degree in mechanical engineering, Mr. Sanders joined Exxon Corporation as an engineer at its Baton Rouge, Louisiana, refinery. He later held positions of increasing responsibility with Exxon's chemical business, including planning manager, vice president of the olefins business both in the U.S. and worldwide, executive vice president of Exxon Chemical Americas and president of Exxon Chemical Asia Pacific.

In 1988, Mr. Sanders became executive assistant to the chairman and president of Exxon Corporation, and in 1990 he was appointed senior vice president of Exxon Company, U.S.A. In 1992 he became worldwide president of the Basic Chemicals Group of Exxon Chemical, and in 1994 he was named vice president of human resources for Exxon Corporation. He was named executive vice president of Exxon Chemical in 1998 and president in January 1999. He was appointed to his current position of president of ExxonMobil Chemical Company in December of 1999 when the two companies merged.

Mr. Sanders is a member of the Council of Overseers of the Jesse H. Jones Graduate School of Management at Rice University. He also serves on the Advisory Board of the University of South Carolina and Furman University and the Board of Governors of the Houston Grand Opera. He is also on the Board of Directors of Milliken & Company.

Headquartered in Norwalk, Connecticut, Arch Chemicals, Inc. is a global specialty chemicals company with more than $1 billion in annual sales. Arch and its subsidiaries have leadership positions in three business segments -- Treatment Products, Microelectronic Materials and Performance Products -- and they serve leading customers in these markets with forward-looking solutions to meet their chemical needs. Together with its subsidiaries, Arch has approximately 3,300 employees and manufacturing and customer-support facilities in North and South America, Europe, Asia and Africa.