Warning: The NCBI web site requires JavaScript to function. more...
An official website of the United States government
The .gov means it's official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.
The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
Dichlorodiphenyl Dichloroethylene
An organochlorine pesticide, it is the ethylene metabolite of DDT.
Year introduced: 2005
Insecticides
Pesticides designed to control insects that are harmful to man. The insects may be directly harmful, as those acting as disease vectors, or indirectly harmful, as destroyers of crops, food products, or textile fabrics.
Organic Chemicals
A broad class of substances containing carbon and its derivatives. Many of these chemicals will frequently contain hydrogen with or without oxygen, nitrogen, sulfur, phosphorus, and other elements. They exist in either carbon chain or carbon ring form.
Year introduced: 1998
Hydrocarbons, Halogenated
Hydrocarbon compounds with one or more HYDROGEN atoms substituted with HALOGENS.
Year introduced: 1966
Hydrocarbons, Chlorinated
Hydrocarbon compounds with one or more of the hydrogens replaced by CHLORINE.
Year introduced: 1974
Hydrocarbons
Organic compounds that primarily contain carbon and hydrogen atoms with the carbon atoms forming a linear or circular structure.
Specialty Uses of Chemicals
Uses of chemicals in a research, industrial, or household setting. This does not include PHARMACOLOGIC ACTIONS.
Year introduced: 2004(1999)
Chemical Actions and Uses
A group of pharmacologic activities, effects on living systems and the environment, and modes of employment of drugs and chemicals. They are broken into actions, which describe their effects, and uses, which describe how they are employed.
Year introduced: 1999
Agrochemicals
Chemicals used in agriculture. These include pesticides, fumigants, fertilizers, plant hormones, steroids, antibiotics, mycotoxins, etc.
Year introduced: 1992
Pesticides
Chemicals used to destroy pests of any sort. The concept includes fungicides (FUNGICIDES, INDUSTRIAL); INSECTICIDES; RODENTICIDES; etc.
Toxic Actions
A broad category of chemical actions with harmful or deadly effect on living organisms.
Year introduced: 2004(1998)