Knowledge

Intermediates refer to semi-finished products, which are intermediate products in the production of certain products.

Organophosphorus pesticides are mostly ester (or amide) compounds, and the hydrocarbon groups in the molecular structure of traditional organophosphorus pesticides are mostly aliphatic hydrocarbon gro

The insecticidal spectrum is wide. The currently commonly used varieties of organophosphorus pesticides can control a variety of agricultural and forestry pests, and some can be used to control sanita

There are many varieties and a wide range of applications. Most organophosphorus insecticides have broad-spectrum insecticidal effects, and have killing effects on mosquitoes, flies, ticks, mites, lic

Inhibit the activity of acetylcholinesterase, so that acetylcholine cannot be decomposed in time and accumulates, and it continuously binds to the receptors on the postsynaptic membrane.

Commonly used organophosphorus pesticides are trichlorfon, dichlorvos (DDVP), dichlorvos calcium, dibromophos, malathion (marathion), and fenthion.

With the development of the pesticide industry, the types of pesticides are increasing, but the main varieties used in production are organophosphorus, carbamate, and pyrethroid vinegar pesticides.

Muscarinic symptoms: can appear in the early stage, mainly manifested as loss of appetite, nausea, vomiting, abdominal pain, diarrhea, salivation, sweating, blurred vision, miosis, increased respirato

Organophosphorus pesticides can enter the human body through the digestive tract, respiratory tract and intact skin and mucous membranes.

The toxicity of each species can be different, most of them are highly toxic and highly toxic, and a few are low toxicity.

Organophosphorus pesticides are mostly oily or crystalline, and industrial products are pale yellow to brown. Except for trichlorfon and dichlorvos, most of them have a garlic odor.

There are many types of organophosphorus pesticides, which are divided into three categories according to their toxicity: high toxicity, poisoning, and low toxicity.