Carbamate

Carbamate is a complex functional group in organic chemistry. It is a carbamic acid molecule where some or all hydrogen atoms have been replaced. They have an amide and ester group that share a carbonyl.[1]

There is also a carbamate ion, H2NCOO−. The carbamate ion has two hydrogen atoms on the nitrogen atom, and a negative electric charge shared by the oxygen atoms. Compounds with this ion are called carbamate salts. Ammonium carbamate is an important carbamate salt.

In polymer chemistry, the carbamate group is called urethane. Polyurethanes are polymers linked together by carbamate groups. Formally, the name "urethane" refers to ethyl esters.[1]

Uses

Insecticide

Some carbamate compounds are used to kill insects. Carbaryl and methomyl are examples of carbamate insecticides. These insecticides are toxic to humans.[2]


Sources

  1. ↑ 1.0 1.1 International Union of Pure and Applied Chemistry. "Carbamates". Compendium of Chemical Terminology Internet edition.
  2. ↑ "Chapter 6: N-Methyl Carbamates" (PDF). Recognition and Management of Pesticide Poisonings: Sixth Edition. United States Environmental Protection Agency. 2016.
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