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[Chemical Knowledge]：Production method and process of sodium benzoate

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of the manufacturing method
of sodium benzoate Sodium benzoate is an important raw material for chemical production, which is widely used in food, medicine, chemical industry and other fields. This article will introduce the manufacturing method of sodium benzoate, including raw material preparation, reaction process, post-treatment and so on.

1. Raw Material Preparation

The main raw materials for the manufacture of sodium benzoate are benzoic acid and sodium hydroxide. Benzoic acid can be obtained by petrochemical, coal chemical and other ways, sodium hydroxide can be obtained by electrolytic salt water and other methods. Before preparing sodium benzoate, quality inspection and purity control of raw materials are required to ensure the quality and stability of the final product.

2. reaction process

The manufacturing process of sodium benzoate is an acid-base neutralization reaction process. Specifically, benzoic acid and sodium hydroxide are mixed according to a certain molar ratio, and the reaction temperature and time are controlled, so that benzoic acid fully reacts with sodium hydroxide to generate sodium benzoate and water. During the reaction, it is necessary to control the reaction speed and pH value to avoid the formation of by-products and the loss of products.

3. post-treatment

After the reaction is completed, the reaction solution needs to be post-treated to obtain pure sodium benzoate product. The post-treatment process includes filtration, washing, drying and other links. Wherein, filtering is to remove impurities and by-products in the reaction solution, washing is to further remove impurities on the surface of the product, and drying is to obtain a dried sodium benzoate product. In the post-processing process, it is necessary to pay attention to controlling the operating conditions and product quality to avoid product loss and quality degradation.

4. precautions

In the process of manufacturing sodium benzoate, the following matters need to be paid attention to:

1. Control the quality and purity of raw materials to avoid the impact on the quality of the final product;
2. Control the reaction temperature and time to avoid The generation of by-products and product loss;
3. Control the post-processing conditions to ensure product quality and purity;
4. Pay attention to safe production and environmental protection requirements, comply with relevant laws, regulations and standards.

In short, the manufacturing method of sodium benzoate needs to pay attention to the operating conditions and product quality control of raw material preparation, reaction process, post-treatment and other links to ensure the quality and stability of the final product. At the same time, it is necessary to comply with relevant laws, regulations and standards to ensure safe production and environmental protection requirements.

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