Table 1.
Characteristics of the three carbamate insecticides.
| Carbamate insecticide | Carbofuran | Carbosulfan | Fenobucarb |
|---|---|---|---|
| CAS number | 1563-66-2 | 55285-14-8 | 3766-81-2 |
| WHO toxicity class | Ib Highly hazardous | II Moderately hazardous | II Moderately hazardous |
| Rat oral LD50 a | |||
| – WHO [30] | 8 | 250 | 620 |
| – CPH [31] | 8 | 209 | 640 |
| Fat solubility (log p) b | 2.32 | 5.57 | 2.78 |
| Preparation | Solid | Liquid | Liquid |
| Formulation | |||
| – g/kg or g/L | 30 | 250 | 500 |
| – Size/volume | 0.5–1.0 kg | 100–200 mL | 100–200 mL |
a
Two sources of rat oral LD50 values (mg/kg) are given here. Abbreviations: CPH: Crop Protection Handbook; WHO: World Health Organization.
b
Log P (or log K ow), the logarithm of the partition coefficient between n-octanol and water, correlates with fat solubility. The values given here are from TOXNET: ChemIDplus, US National Library of Medicine. A value of <1.0 indicates a hydrophilic compound; a value >4.0 indicates a highly fat soluble compound.