Table 1.
Physicochemical properties of the selected pesticides
| Compound | Structural group | M.F. | M.W. | M.P. (ºC ) |
|---|---|---|---|---|
| Diazinon | Organophosphorus | C12H21N2O3PS | 304.35 | <120 °C |
| Chlorpyrifos | Organophosphorus | C9H11CL3NO3PS | 350.59 | 41.5-43.5 °C |
| Pirimiphos-methyl | Organophosphorus | C11H20N3O3PS | 305 | 15 °C |
| Beta-Endosufan | Organochlorous | C9H6CL6O3S | 406.93 | 207-209 °C |
| Alpha-Endosulfan | Organochlorous | C9H6CL6O3S | 406.92 | 106 °C |
| Fenvalerate1,2 | Pyrethroid | C25H22CLNO3 | 419.91 | <25 °C |
| Primicarb | Carbamat | C11H18N4O2 | 238.29 | 90.5 °C |
| Carbaryl | Carbamat | C12H11NO2 | 201.22 | 142.2 °C |
| Propargite | Sulfite ester | C19H26O4S | 350.5 | 47 °C |
| Fenpropathrin | Pyrethroid | C22H23NO3 | 349.4 | 47 °C |
| Permethrin1,2 | Pyrethroid | C21H20Cl2O3 | 391.29 | 34 °C |
| Metalaxyl | Acylalanin | C15H21NO4 | 279.34 | 72 °C |