Midland, MI - February 12, 2008

Effective immediately, or as contract terms allow, The Dow Chemical Company (“Dow”) is increasing its U.S. off schedule selling prices of both diaphragm (commercial) and membrane grades of caustic soda 50% solution (basis 76% Na2O) by $50/dry short ton (DST). All TVA’s (Temporary Voluntary Allowances) now in place shall remain in effect and are not affected by this notice.

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For Editorial Information:

Jeannine Sohayda
The Dow Chemical Company
(989) 636-8485