The use of pesticide 3911

Pesticide 3911, also known as methamidophos and simetil, is a transparent, slightly smelly oily liquid. The list of pesticides that are restricted on vegetables, fruit trees, tea, Chinese herbal medicines and other crops is prohibited, and it is illegal to produce, sell and use them.

I. Health hazards

1. The route of invasion: inhalation, ingestion and percutaneous absorption.

two。 Health hazards: inhibition of cholinesterase activity, resulting in neurophysiological dysfunction.

3. Acute poisoning: acute poisoning caused by massive exposure (oral, inhaled, skin, mucous membrane) in a short period of time. The symptoms include headache, dizziness, loss of appetite, nausea, vomiting, abdominal pain, diarrhea, salivation, pupil narrowing, increased respiratory secretions, hyperhidrosis, muscle bundle tremor and so on. Severe cases showed pulmonary edema, brain edema, coma and respiratory paralysis. Some cases may have heart, liver and kidney damage. A few severe cases developed peripheral neuropathy weeks or months after the recovery of consciousness. Delayed sudden death may occur in some severe cases. The activity of blood cholinesterase decreased.

4. Chronic poisoning: there is still debate. There are neurasthenia syndrome, hyperhidrosis, muscle bundle tremor and so on. The activity of blood cholinesterase decreased.

II. Disposal methods

1. Empty bottles must be washed, broken, deeply buried or handed over to the relevant departments for centralized disposal, and other use is strictly prohibited.

two。 Emergency treatment of leakage: evacuate the contaminated area quickly and strictly restrict entry and exit. Cut off the source of fire and do not touch the leakage directly. Small leakage: adsorption or absorption with sand or other incombustible materials. A large number of leaks: building dikes or digging holes for shelter; covering with foam to reduce steam disasters. Transfer the pump to the tanker or special collector for recovery or transport to the waste treatment site for disposal. If solid, collect it in a dry, clean, covered container with a clean shovel. If there is a large amount of leakage, it will be collected and recycled or transported to the waste treatment site for disposal.

3. In case of acute poisoning, immediately make the patient leave the scene, take off the contaminated clothes, wash the contaminated parts thoroughly with soapy water or alkali solution, if oral, use 2% sodium bicarbonate or light saline for gastric lavage, do not use potassium permanganate solution for gastric lavage (which should oxidize the product into more toxic compounds), and take tablets PAM or atropine 1 tablet. Eye contamination can be rinsed with soda or saline.

4. Fire fighting: fire fighting with water, sand and carbon dioxide fire extinguishers, we should pay attention to wear reliable anti-virus and protective equipment to prevent personal poisoning.

Pesticide 3911 has been banned by the state, so we must not use, sell and produce this pesticide, you can choose other legal pesticides instead.