DuPont Makes Contribution to U.S. Pension Plan

WILMINGTON, Del.,  September 08, 2005  —  DuPont today announced it has made a $1 billion voluntary contribution to its principal U.S. Pension and Retirement Plan.

"Given the current low interest rate environment, we decided it was financially prudent to make a voluntary contribution at this time," said John Jessup, vice president and treasurer.

In previous filings with the Securities and Exchange Commission, the company has indicated that it would consider making a contribution.

The contribution will not impact 2005 earnings per share, but will generate a net benefit of about $0.04 per share in 2006 and will not impact the company's financial position.

DuPont is a science company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture, nutrition, electronics, communications, safety and protection, home and construction, transportation and apparel.

9/8/05