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

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Sodium difluorochloroacetate is an important chemical raw material, widely used in medicine, pesticides, dyes and other fields. This article will introduce the manufacturing method of sodium difluorochloroacetate, including raw material preparation, reaction process, post-treatment and other steps.

1. Raw Material Preparation

The main raw materials required for the manufacture of sodium difluorochloroacetate are chloroacetic acid, sodium hydroxide and fluorination reagents. Among them, chloroacetic acid can be prepared by the reaction of acetic acid and chlorine gas, sodium hydroxide can be prepared by the reaction of lime milk and sodium carbonate, and the fluorination reagent can be potassium fluoride or sodium fluoride.

2. Reaction Process

1. Fluorination Reaction

of Chloroacetic Acid Chloroacetic acid is added to the reaction kettle, and an appropriate amount of fluorination reagent is added and stirred evenly. During the reaction, it is necessary to control the reaction temperature and time to ensure the progress of the reaction and the quality of the product. After completion of the reaction, fluorochloroacetic acid was obtained.

2. Alkalization reaction of fluorochloroacetic acid

Add fluorochloroacetic acid into another reactor, add an appropriate amount of sodium hydroxide solution, and stir well. During the alkalization reaction, it is necessary to control the pH value and the reaction temperature to ensure the formation of sodium difluorochloroacetate. After completion of the reaction, a solution of sodium difluorochloroacetate was obtained.

3. post-treatment

the sodium difluorochloroacetate solution is subjected to centrifugal separation, washing, drying and other treatments to obtain pure sodium difluorochloroacetate product. It should be noted that the operating conditions should be strictly controlled during the post-processing process to avoid product decomposition and loss.
Precautions for
4.

1. During the manufacturing process, the safety operation procedures should be strictly observed, and personal safety and environmental protection should be paid attention.
2. In the reaction process, the reaction conditions should be strictly controlled to ensure the quality and yield of the product.
3. In the post-processing process, attention should be paid to the operation details to avoid product decomposition and loss.

In short, the manufacturing method of sodium difluorochloroacetate needs to master the steps of raw material preparation, reaction process and post-treatment, and at the same time, it is necessary to pay attention to the requirements of safety and environmental protection. By strictly controlling the operating conditions and precautions, high-quality sodium difluorochloroacetate products can be manufactured.

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