Net loss attributable to the company was $253 million, or 29 cents per share, in the fourth quarter ended Dec. 31, from a profit of $683 million, or 74 cents per share, a year earlier.
Net sales fell 9.4 percent to $5.3 billion.
DuPont and Dow Chemical Co agreed to merge in an all-stock deal in December in a first step toward breaking up into three separate businesses.
(Reporting by Amrutha Gayathri in Bengaluru; Editing by Shounak Dasgupta)