Aluminum phosphide is a chemical substance with the molecular formula AlP, which is obtained by burning red phosphorus and aluminum powder. Pure aluminum phosphide is a white crystal; industrial products are generally light yellow or gray-green loose solids with a purity of 93%-96%. They are often made into tablets, which can absorb moisture on their own and gradually release phosphine gas, which plays a fumigation effect. Aluminum phosphide can be used in pesticides, but it is highly toxic to humans; aluminum phosphide is a semiconductor with a wide energy gap.
How to use aluminum phosphide
1. Aluminum phosphide is strictly prohibited from direct contact with chemicals.
2. When using aluminum phosphide, you must strictly abide by the relevant regulations and safety measures for aluminum phosphide fumigation. When fumigating aluminum phosphide, you must be guided by skilled technicians or experienced staff. Single-person operation is strictly prohibited. In sunny weather, Do not do it at night.
3. The medicine barrel should be opened outdoors. Danger cordons should be set up around the fumigation site. Eyes and faces should not be facing the mouth of the barrel. The medicine should be administered for 24 hours. There should be a dedicated person to check whether there is any air leakage or fire.
4. After the gas is dispersed, collect all the remaining medicine bag residues. The residue can be put into a bag with water in a steel bucket in an open place away from the living area, and soaked fully to completely decompose the residual aluminum phosphide (until there are no bubbles on the liquid surface). The harmless slurry can be disposed of in a place permitted by the environmental protection management department. Waste disposal site.
5. Used empty containers should not be used for other purposes and should be destroyed in time.
6. Aluminum phosphide is toxic to bees, fish, and silkworms. Avoid affecting the surroundings during pesticide application. It is prohibited in silkworm rooms.
7. When applying pesticides, you should wear a suitable gas mask, work clothes, and special gloves. Do not smoke or eat. Wash your hands, face or take a bath after applying the medicine.
How aluminum phosphide works
Aluminum phosphide is usually used as a broad-spectrum fumigation pesticide, mainly used to fumigate and kill storage pests of goods, various pests in space, grain storage pests, seed grain storage pests, outdoor rodents in caves, etc. .
After aluminum phosphide absorbs water, it will immediately produce highly toxic phosphine gas, which enters the body through the respiratory system of insects (or mice and other animals) and acts on the respiratory chain and cytochrome oxidase of cell mitochondria, inhibiting their normal respiration and causing death. .
In the absence of oxygen, phosphine is not easily inhaled by insects and does not show toxicity. In the presence of oxygen, phosphine can be inhaled and kill insects. Insects exposed to high concentrations of phosphine will suffer from paralysis or protective coma and reduced respiration.
Preparation products can fumigate raw grains, finished grains, oil crops, dried potatoes, etc. When fumigating seeds, their moisture requirements vary with different crops.
Application scope of aluminum phosphide
In sealed warehouses or containers, all kinds of stored grain pests can be directly eliminated, and mice in the warehouse can be killed. Even if pests appear in the granary, they can also be killed well. Phosphine can also be used to treat mites, lice, leather clothing, and down moths on items in homes and stores, or to avoid pest damage.
Used in sealed greenhouses, glass houses, and plastic greenhouses, it can directly kill all underground and above-ground pests and mice, and can penetrate into plants to kill boring pests and root nematodes. Sealed plastic bags with thick texture and greenhouses can be used to treat open flower bases and export potted flowers, killing nematodes underground and in the plants and various pests on the plants.
Post time: Jan-03-2024
