Chlorothalonil is a broad spectrum fungicide and is effective in protecting plants against fungal diseases caused mainly by Phytophthora infestans and Alternaria solani. Chlorothalonil is used for controlling of fungal foliar diseases of vegetables and crops.
| Molecular Weight | 265.91 |
| Formula | C8Cl4N2 |
| CAS Number | 1897-45-6 |
| Form | Solid |
| Solubility (25°C) | DMSO 30 mg/mL (ultrasonic) |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
[3] Pei Lv et al. Pest Manag Sci. Flavonoid-sensitized photolysis of chlorothalonil in water
[4] No authors listed. IARC Monogr Eval Carcinog Risks Hum. Chlorothalonil
[5] H S Rosenkranz. Mutat Res. Chlorothalonil: lack of genotoxic potential
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