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[Chemical Knowledge]：Production and manufacturing method and process flow of fungicide

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The manufacturing method
of fungicide
1. Introduction

In the field of chemical production raw materials, fungicide is an important product, which is widely used in agriculture, industry, medical treatment, food and other fields. In order to meet the growing market demand, it is essential to study the manufacturing methods of biocides. This article will introduce a common fungicide manufacturing method, in order to provide reference for the production of related fields.

2. materials and equipment

1. Materials: phenol, formaldehyde, sodium hydroxide, hydrochloric acid, activated carbon, etc.
2. Equipment: reaction kettle, stirrer, thermometer, pH meter, filter, etc.

3. Manufacturing Methods

1. Condensation Reaction of Phenol and Formaldehyde
Add the calculated amount of phenol and formaldehyde in the reaction kettle, start the stirrer, control the reaction temperature within a certain range, after a certain period of time, get phenolic resin.
2. Alkaline washing
Add phenolic resin into a certain concentration of sodium hydroxide solution and stir for a certain time to remove acidic substances. Then wash with water until neutral.
3. Acidification
Add the phenolic resin after alkali washing to a certain concentration of hydrochloric acid solution and stir for a certain time to acidify the resin. Then wash with water until neutral.
4. Activated carbon decolorization
The acidified phenolic resin is added to the activated carbon, stirred for a certain period of time, and the pigment in the resin is removed. The activated carbon was then filtered off with a filter.
5. Finished product packaging
The decolorized phenolic resin is dried and then packaged to obtain a fungicide product.

4. Precautions

1. In the entire manufacturing process, it is necessary to strictly control the reaction temperature, pH value and other parameters to ensure the smooth progress of the reaction.
2. When using activated carbon decolorization, the amount of activated carbon and decolorization time should be adjusted according to the actual situation.
3. In the packaging process, it is necessary to ensure the tightness of the product to prevent moisture or deterioration of the product.

5. conclusion

The fungicide manufacturing method introduced in this paper has the advantages of simple operation, easy availability of raw materials and high production efficiency, and can be widely used in the field of fungicide manufacturing in the field of chemical production raw materials. By strictly controlling the parameters in the manufacturing process, high-quality fungicide products can be obtained. It is hoped that this paper can provide reference for the production of related fields and contribute to the development of fungicide manufacturing technology.

6. Outlook

With the continuous progress of science and technology, fungicide manufacturing technology will continue to optimize and develop. In the future, researchers can explore more environmentally friendly and efficient manufacturing methods to improve the performance of fungicides and reduce production costs. At the same time, strengthening the study of the mechanism of action of fungicides will help to provide a theoretical basis for the development and design of new fungicides. It is hoped that the field of fungicide manufacturing can achieve more results in the future, and make greater contributions to the protection of human health and the promotion of industrial and agricultural development.

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