Environmental Engineering Reference
In-Depth Information
TABLE 6.2
Chemical Classiication of Pesticides
Chemical Type
Example
Structure
Typical Action
Organochlorines
Insecticide
p,p′-DDT
Cl
Cl
Cl
CCl 3
Organophosphates
Malathion
Insecticide
CH 2 COOC 2 H 5
MeO
P
S
CHCOOC 2 H 5
MeO
S
Carbamates
Carbaryl
Insecticide
O
CONHCH 3
Dithiocarbamates
Thiram
Fungicide
(CH 3 ) 2 N CS
S CNSN(CH 3 ) 2
Carboxylicacid
derivatives
2,4-D
Herbicide
Cl
Cl
CONH 2 COOH
Substitutedureas
Diuron
Herbicide
O
NHCN(CH 3 ) 2
Cl
Cl
Triazines
Simazine
Cl
Herbicide
C
N
N
C 2 H 5 NHC
CNHC 2 H 5
N
Pyrethroids
Cypermethrin
Insecticide
CN
CCl 2
CH
O
CH CH CH
O
O
C
CH 3
H 3 C
Neemproducts
Nimbidin
(Azadirachtin)
C 35 H 44 O 16
Insecticide
Others
Organometalics
Phenylmercury
acetate
Fungicide
Hg
OCO
CH 3
 
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