Pesticide production includes intermediates, apis and preparations. Intermediates are the key products of the process before the production of apis. Only after further molecular changes or refining can they become a kind of material for apis. The content of API is generally more than 95%, and it is one of the main raw materials for the production of pharmaceutical products. Direct use of the API has poor efficacy, and it is generally sold to the preparation factory, which can improve the efficacy of the API by making it into a preparation. The effective content of the raw material in the preparation is generally about 20%, and the other groups are divided into emulsifier, dispersant, wetting agent, etc., which are packaged and labeled and sold to the end consumer. There are three main categories of pesticides according to their uses: insecticides, herbicides and fungicides. Let's take a look at them below.
DMF is a good organic solvent and an important intermediate in organic synthesis with strong polarity and low toxicity. Among the insecticides, DMF dosage of high varieties are imidacloprid, acetamidine, fipronil and so on. The widespread use of pesticides, on the one hand, promoted the increase of farmers' production and income and the rapid development of agriculture, on the other hand, organic synthetic pesticides are toxic, production process will produce a large amount of sewage, use process will pollute the environment, so organic synthetic pesticides such as organic chlorine, organic phosphorus and carbamate gradually withdraw from the market because they do not meet the environmental protection requirements. And low toxicity non-toxic pesticide industry is the direction of development. With the rise of biological drugs, dimethylformamide (DMF) as a solvent (a liquid that can dissolve gas, solid, liquid and become a uniform mixture) in the preparation of bulk drugs and drug intermediates has been widely used, which meets the requirements of The Times.
Herbicides are agents that cause weeds to die completely or selectively. According to the mode of action can be divided into :(1) selective herbicide: this agent can kill weeds, but harmless to seedlings. Such as cover grass can, Pucao net, Goer, etc. (2) Insecticidal herbicides: Herbicides are toxic to all plants. As long as they touch the green parts, regardless of seedlings and weeds, they will be harmed or killed. It is mainly used before sowing, after sowing, before seedling emergence, and on the main and secondary roads of the nursery. Such as glyphosate, etc.
Fungicides are mainly divided into four categories: protective fungicides, eradication fungicides, therapeutic fungicides, disease resistance activators, respectively play the role of protecting crops, killing pathogens, enhancing crop resistance.
DMF has been applied in the three plates, among which the dosage of large insecticide accounts for about 90%, the dosage of small herbicide accounts for about 10%, and the dosage of fungicide is very small and can be ignored. Among DMF's many downstream industries, the overall market share of pesticides is not large, only about 5%, but in the dull period of the market, they often become the key minority affecting the trend of the DMF market, which is worth paying close attention to.
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