®

1007 Market Street

Wilmington, Delaware 19898

April 22, 2015

BY EDGAR

Mr. John Cash

Accounting Branch Chief

United States Securities and Exchange Commission

Division of Corporation Finance

Mail Stop 7010

100 F Street, NE

Washington, D.C. 20549-7010

Re:E. I. du Pont de Nemours and Company

Form 10-K for the Fiscal Year Ended December 31, 2014

Filed February 5, 2015

Definitive Proxy Statement on Schedule 14A

Filed March 23, 2015

File No. 1-815

Dear Mr. Cash:

As discussed with your staff, DuPont requests additional time to respond to your comment letter dated April 16, 2015. DuPont is requesting the additional time because of the increased work demands required by other important matters at this time, including its upcoming annual meeting of stockholders on May 13, 2015. DuPont plans to respond to your letter no later than Friday, May 15, 2015.

Please call me at (302) 773-7145 if you have any questions or would like to discuss this request in more detail.

Sincerely,

/s/Calissa W. Brown

Calissa W. Brown

Corporate Counsel and Assistant Secretary