Commercial DDT is a mixture of several closely–related compounds. The major component (77%) is the
p'isomer (pictured to the right) is also present in significant amounts (15%).
dichlorodiphenyldichloroethane(DDD) make up the balance. DDE and DDD are also the major
metabolitesand breakdown products in the environment.
The term "
" is often used to refer to the sum of all DDT related compounds (
o,p'-DDT, DDE, and DDD) in a sample.