The main types of pesticide raw materials and introduction
Time:
2022-12-13
Pesticide raw materials synthesis of liquid products for crude oil, solid products for the original powder, collectively referred to as the original drug. Most of the original pesticide due to its physical and chemical properties and high content of active ingredients can not be used directly, in practice, need to be processed into different dosage forms.
Pesticide raw materials synthesis of liquid products for crude oil, solid products for the original powder, collectively referred to as the original drug. Most of the original pesticide due to its physical and chemical properties and high content of active ingredients can not be used directly, in practice, need to be processed into different dosage forms.
At present, the following pesticide formulations are commonly used.
1. Emulsifiable oil (EC)
Emulsifiable oil is mainly composed of pesticide raw materials, solvents and emulsifiers, in some emulsions also add a small amount of co-solvents and stabilizers. The use of solvents is mainly to dissolve and dilute the original pesticide, to help emulsify and disperse, to increase the fluidity of the emulsion. Commonly used are xylene, benzene, toluene, etc. 2.
2. Powder (DP)
The powder is made by mixing the original pesticide and filler. Some powders also add stabilizers.
There are many kinds of fillers, commonly used clay, kaolin, talc, diatomaceous earth, etc.
3. Wettable powder (WP)
Wettable powder is made of the original pesticide, filler and wetting agent mixed and processed.
Wettable powder requirements and selection of fillers are similar to those of powders, but the requirements for fineness of powder particles are higher. Wettable powder is diluted with water and can be used for spraying.
4. Granules (GR)
Granules are made from the original pesticide, carrier and additives mixed processing.
The carrier plays the role of adhesion and dilution of the original drug, is the basis for the formation of particles (particle base).
5. Water agent (AS)
The water agent is mainly composed of pesticide original drug and water, some also add a small amount of preservatives, wetting several agents, coloring agents, etc.. The preparation is to use water as a solvent, pesticide raw material in water has a high solubility, some pesticide raw material in the form of salt in water. Water agent processing is convenient, low cost, but some pesticides in water is unstable, long-term storage is prone to decomposition failure.
6. Suspending agent (SC)
Suspending agent, also known as colloidal suspension, is a flowable liquid-like preparation. It is made from the original pesticide and dispersants and other additives mixed and processed, the diameter of the particles is less than micron. Suspending agent use to water spray, 40% carbendazim suspension, 20% pyrethrum suspension, etc.
7. Ultra low volume spray (ULV)
Ultra low volume spray is an oil-based agent, also known as oil agent. It is a mixture of pesticide and solvent processing, some also add a small amount of co-solvent, stabilizer, etc.. This preparation is exclusively for ULV sprayers, or aircraft ULV spraying, without dilution and direct spraying.
Recommended
Contact us
Address: Fine Chemical Industry Park, Kaifeng City, Henan Province, China
