What does carbamate mean?
A carbamate is a chemical compound containing the group –NHCOO–, formally a salt or ester of carbamic acid, an unstable acid that combines features of carbon dioxide and ammonia. The term matters most outside pure chemistry: a large family of synthetic carbamate esters — including carbaryl, aldicarb, and methomyl — became some of the most widely applied insecticides of the twentieth century, valued because they degrade relatively quickly in the environment compared with older organochlorine pesticides like DDT. These compounds work by inhibiting acetylcholinesterase, the enzyme that breaks down the neurotransmitter acetylcholine, which makes them effective against insects but also potentially hazardous to humans and wildlife at higher exposures. Beyond pest control, carbamate chemistry underlies polyurethane manufacture and certain medicines, notably cholinesterase-inhibiting drugs used to treat Alzheimer's disease. The word appears chiefly in scientific, agricultural, regulatory, and medical writing.
nounAny salt or ester of carbamic acid, a compound containing the group –NHCOO–; also used of the widely used class of pesticides (such as carbaryl and aldicarb) that are carbamate derivatives and act by inhibiting the enzyme acetylcholinesterase.
- (Chemistry) Any salt or ester of carbamic acid, containing the functional group –NHCOO–.
- (Agriculture/Toxicology) A member of the class of carbamate-derived pesticides, such as carbaryl, aldicarb, and methomyl, which act by inhibiting acetylcholinesterase.
"The vineyard was sprayed with a carbamate to control the beetle infestation."
"Polyurethane foams can be formed through reactions involving carbamate intermediates."
"Farmers were advised to limit exposure to the carbamate, which is highly toxic to birds and aquatic life."
Standard plural; used when referring to multiple individual compounds within the class.
"Regulators reviewed several carbamates before restricting their use near waterways."
Some of the world's most widely used insecticides are carbamates — they work by jamming the same nerve-signalling enzyme that certain nerve agents target.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of carbamate
The word carbamate comes from carbamic acid, itself named from Latin 'carbo', meaning coal or charcoal, combined with reference to ammonia — reflecting the compound's composition of carbon, nitrogen, hydrogen, and oxygen. The term entered English in the nineteenth century as chemists systematised organic nomenclature around carbamic acid and its derivatives. It shares its root with related carbon-based terms such as carbonate and carbide.
How carbamate is actually used
Primarily a technical term used in chemistry, agriculture, toxicology, and medicine. In medical contexts it may refer to drugs whose mechanism involves carbamate chemistry (for example rivastigmine, a carbamate acetylcholinesterase inhibitor). Register is formal and scientific.
Easily confused with carbamate
A carbonate is a salt or ester of carbonic acid (containing –CO3), whereas a carbamate derives from carbamic acid and contains nitrogen as well as carbon in its functional group.
A carbide is a binary compound of carbon with a metal or other electropositive element, while a carbamate is an organic compound containing both nitrogen and oxygen bound to a carbonyl.
A carbohydrate is a sugar or starch made of carbon, hydrogen, and oxygen in specific ratios; a carbamate is a nitrogen-containing compound derived from carbamic acid.