DuPont on Friday announced it would buy FMC Corp.’s health and nutrition business and sell its own crop protection unit to the company in order to win European approval for its merger with Dow ChemicalCo., delaying the closing of the blockbuster deal.

The Wilmington-based chemical giant said its agreement with FMC would net DuPont $1.6 million in the difference between the value of assets, and also assuage the concerns of European regulators who feared that the $130 million “merger of equals” would have anticompetitive effects on the market for herbicides and pesticides.