EVERYDAY SCIENCE

Detailed explanation-1: -Aldicarb, carbaryl, propoxur, oxamyl and terbucarb are carbamates. Although these pesticides differ chemically, they act similarly.

Detailed explanation-2: -Some Carbamates of importance are Aldicarb, Carbaryl, Carbofuran, Ferbam, and Captan (Sawyer et al., 2003). Figure 8.2. 1 shows annual usage of Carbofuran in the United States. Carbofuran, like many Carbamates, is primarily used in agriculture.

Detailed explanation-3: -Carbamates are a class of insecticides structurally and mechanistically similar to organophosphate (OP) insecticides.

Detailed explanation-4: -In general carbamate esters are referred to as urethanes, and polymers that include repeating units of carbamate are referred to as POLYURETHANES. Note however that polyurethanes are derived from the polymerization of ISOCYANATES and the singular term URETHANE refers to the ethyl ester of carbamic acid.

Detailed explanation-5: -Carbamate insecticides Included in this group are aldicarb (Temik), carbofuran (Furadan), carbaryl (Sevin), ethienocarb, fenobucarb, oxamyl, and methomyl. These insecticides kill insects by reversibly inactivating the enzyme acetylcholinesterase (IRAC mode of action 1a).