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[Chemical Knowledge]：Production and manufacturing method and process of chlorinated isopropyleneacetone

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The manufacturing method

of chloroisopropyleneacetone Chloroisopropyleneacetone (Chloroisopropyl Acetone, CIPA for short) is an important raw material for chemical production, which is widely used in the fields of medicine, pesticide, spice and so on. This article will introduce the manufacturing method of chloroisopropyleneacetone, including raw material preparation, reaction process, post-treatment and precautions.

1. Raw Material Preparation

The main raw materials for the manufacture of chloroisopropyleneacetone are isopropyleneacetone (Isopropyl Acetone, IPA for short) and chlorine. In order to ensure the smooth progress of the reaction, the raw materials need to be strictly screened and pretreated.

1. isopropylene acetone: industrial grade isopropylene acetone with high purity should be selected to avoid the influence of impurities on the reaction.
2. Chlorine gas: Use dry chlorine gas to ensure the reaction proceeds.

2. Reaction Process The manufacturing process

chloroisopropylacetone mainly involves a chlorination reaction. The specific steps are as follows:

1. Add the isopropyleneacetone into the reaction kettle, start the stirrer, and maintain a proper stirring speed.
2. Introduce dry chlorine gas, and control the appropriate flow rate and reaction temperature.
3. During the chlorination reaction, it is necessary to pay close attention to the changes of temperature and pressure in the reactor to ensure that the reaction is carried out under safe and controllable conditions.
4. Monitor the content of chloroisopropyleneacetone in the reaction solution in real time by titration or other analytical methods to determine the end point of the reaction.

3. post-treatment

After the reaction is completed, the reaction solution needs to be post-treated to obtain a chloroisopropyleneacetone product with higher purity. The specific steps are as follows:

1. stop feeding chlorine gas, and cool the reaction solution to room temperature.
2. An appropriate amount of sodium hydroxide solution is added to the reaction solution, and the pH value is adjusted to neutral or slightly alkaline to remove acidic by-products.
3. The neutralized reaction solution was distilled to collect a chloroisopropylacetone fraction.
4. Refine the collected chloroisopropyleneacetone, such as recrystallization or adsorption treatment, to further improve the purity of the product.

4. precautions

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

1. Strictly control the quality and proportion of raw materials to ensure the smooth progress of the reaction.
2. During the chlorination reaction, proper temperature and pressure should be maintained to avoid the occurrence of side reactions.
3. In the post-treatment process, the pH value should be adjusted to an appropriate range to ensure the purity and quality of the product.
4. Throughout the manufacturing process, comply with the relevant safety procedures to ensure the safety of personnel and equipment.

In short, the manufacturing process of chloroisopropyleneacetone needs to strictly control the conditions and parameters of each link to ensure the quality and yield of the product. Through reasonable raw material preparation, reaction process control and post-treatment operation, high-purity chloroisopropylacetone can be produced to meet the needs of different fields.

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