Dichlorodiphenyldichloroethylene is the full name of DDE which is a breakdown product of DDT. The full name of this compound is 1,1-bis-(4-chlorophenyl)-2,2-dichloroethene, and this compound is formed by the loss of hydrogen chloride (dehydrohalogenation) of DDT 1,1-bis-(4-chlorophenyl)-2,2,2-trichloroethane. Dynamic Data Exchange (DDE) is an old technology for communication between multiple applications under Microsoft Windows and also OS/2. ... DDT was the first modern pesticide and is arguably the most well known organic pesticide. ... Hydrogen chloride, also known under the name HCl, is a highly corrosive and toxic colorless gas that forms white fumes on contact with humidity. ...

DDE is a fat soluble substance which tends to build up in the fat of animals, while it is not an insectidide it is commonly found as a breakdown product of DDT.