Carbamates are esters of carbamic
acid and classified as methyl or dimethyl carbamates and inhibit acetylcholinesterase.
In the case of PUR foam production, water reacts with isocyanate, forming carbamic
acid which decomposes to an amine and carbon dioxide which acts as the foam blowing agent.
Most insecticides in use today are esters of substituted phosphoric, carbamic
or cyclopropane- carboxylic acids, and are consequently subjected to degradation by esterases (Devonshire, 1991).
On the tear-off of young abalone from the attachment site by four anaesthetics (ethyl carbamic
acid, magnesium sulphate, chloral hydrate and sodium diethylbarbituric acid).
Exposure of young children working on Mexican tobacco plantations to organophosphorous and carbamic
pesticides, indicated by cholinesterase depression.
This two-step reaction is controlled by the much slower isocyanate/water reaction, producing a substituted carbamic
acid that breaks down into an amine and carbon dioxide gas.
The samples are acidified at the site of measurement when the free carbamic
acid formed, which is unstable in acidic solution, immediately decomposes to amine and C[O.
Albendazole, the [5-(propylthio)- 1H-benzimidazole-2-y1] carbamic
acid methyl ester (Sotelo, Escobedo, et al.
From anthesis to harvest, a fungicide (mancozeb--ethylenebis(dithiocarbamic acid) manganese zinc complex, chlorothalonil--tetrachloro-isophthalonitrile, benomyl-- [1-[(butylamino)carbonyl]-1H-benzimidazol-2-yl] carbamic
acid methyl ester, or thiophanate methyl 4,4'-ophenylenebis (3-thioallophanic acid)dimethyl ester) was applied to foliage every 7 to 10 d.
The urea bond hydrolyzes to a carbamic
acid and an amine.
Synthesis of carbamic
acids and their derivatives, isocyanates and ureas
OMMT contained two hydroxyls that generated stronger interactions with TPU, which obtained carbamic
acid ester, compared with that of PLA, which had carboxyl at the ends of the molecular chains.