Fungicide Chlorothalonil
2022-01-21
Chlorothalonil, also known as 2,4,5,6-tetrachloro-1,3-phthalonitrile, with molecular formula C8Cl4N2, is a broad-spectrum protective fungicide. Chlorothalonil can interact with the glyceraldehyde triphosphate dehydrogenase in fungal cells and combine with the protein containing cysteine in the enzyme, thereby destroying the activity of the enzyme, causing the metabolism of the fungal cells to be destroyed and lose vitality. Chlorothalonil has no systemic absorption and conduction effect, but after spraying on plants, it can have good adhesion on the body surface, and it is not easy to be washed away by rainwater, so the efficacy period is longer.
toxicity
The acute oral LD50 of rats is >10000mg/kg, and that of mice is 3700mg/kg; the acute percutaneous LD50 of rabbits is 1000mg/kg; the acute inhalation LC50 of rats is >4.7mg/L (1h). It has a strong stimulating effect on the conjunctiva and cornea of rabbit eyes, and is not sensitive to human eyes. No carcinogenic, teratogenic or mutagenic effects were found in animal experiments. Rainbow trout LC500.205mg/L, giant sunfish 0.380mg/L, carp 0.1～0.5mg/L, catfish 0.430mg/L. The oral LD50 of teal duck is > 21500mg/kg, and quail is 5200mg/kg. Safe for silkworms and bees.
Product Usage
Chlorothalonil is a broad-spectrum fungicide with high efficiency and low toxicity, which has preventive effect on various crop fungal diseases. The drug effect is stable and the residual effect period is long. It can be used for wheat, rice, vegetables, fruit trees, peanuts, tea and other crops, and can prevent wheat scab, tomato early blight, late blight, leaf mold, leaf blight, melon downy mildew, anthracnose, etc. It can also be used for peach brown rot, scab, tea anthracnose, tea cake disease, net cake disease, peanut leaf spot, rubber canker, cabbage downy mildew, black spot, grape anthracnose, eggplant gray mold, Orange scab disease.
Precautions
1. Chlorothalonil is irritating to human skin and eyes, and a few people have allergic reactions. Usually can cause mild contact dermatitis.
2. Chlorothalonil is toxic to fish and must be kept away from ponds, lakes and streams when applying. Do not contaminate the water source with the liquid used to clean the utensils.
3. This product should be protected from moisture and sunscreen, and stored in a cool and dry place. It is strictly forbidden to mix with food, seeds and feed to prevent accidental ingestion and misuse. Dispose of waste containers properly and safely after use.
4.10% oil can cause phytotoxicity to peach, pear, persimmon, plum and apple young fruit.
5. It has toxic effects on silkworms, tussahs and bees, and precautions should be taken when using them.
Storage characteristics
[Operation Precautions] Closed operation, local exhaust. Prevent dust from being released into the workshop air. Operators must undergo special training and strictly abide by operating procedures. It is recommended that operators wear self-priming filter dust masks, chemical safety goggles, anti-virus infiltration work clothes, and rubber gloves. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Avoid generating dust. Avoid contact with oxidants. Equipped with the corresponding variety and quantity of fire fighting equipment and leakage emergency treatment equipment. Empty containers may be harmful residues.
[Storage Precautions] Store in a cool, ventilated warehouse. Keep away from fire and heat sources. Protect from direct sunlight. Package is sealed. should be kept away from oxidizer, do not store together. Equipped with the appropriate variety and quantity of fire equipment. Storage areas should be provided with suitable materials to contain spills.
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