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

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The production method

of butanone oxime is an important raw material for chemical production, which is widely used in medicine, pesticide, dye and other fields. This article will introduce the manufacturing method of butanone oxime, including raw material preparation, reaction process, post-treatment and so on.

1. Raw Material Preparation

The main raw materials for the manufacture of butanone oxime are butanone and hydroxylamine salts. Butanone is a common organic solvent, which can be prepared from ethylene, acetone and other raw materials. The hydroxylamine salt may be prepared by reacting hydroxylamine with an acid. Before preparing butanone oxime, it is necessary to ensure that the purity and quality of the raw materials meet the requirements.

2. reaction process

the preparation of butanone oxime is carried out under acidic conditions. The specific steps are as follows:

1. Butanone and hydroxylamine salt are added to the reactor according to a certain molar ratio, and a certain amount of acid is added as a catalyst.
2. Stirring the mixture in the reactor at a temperature sufficient to react the butanone and the hydroxylamine salt.
3. The pH value needs to be controlled within a certain range during the reaction to ensure the smooth progress of the reaction.
4. As the reaction proceeds, butanone oxime is gradually generated, and the completion of the reaction can be judged by monitoring the pH value and product content of the reaction solution.

3. post-treatment
After completion of the
reaction, post-treatment is required to obtain a pure butanone oxime product. The specific steps are as follows:

1. the reaction solution is poured into a separatory funnel and washed with water to remove unreacted raw materials and acidic catalyst.
2. The organic phase was dried over magnesium sulfate and filtered to remove the drying agent.
3. Butanone oxime is separated from the organic phase by distillation or rectification to obtain pure butanone oxime product.

4. precautions

1. During the operation, pay attention to controlling the reaction temperature and pH value to ensure the smooth progress of the reaction and the purity of the product.
2. Butanone oxime has certain toxicity and needs to be operated under well-ventilated conditions and avoid contact with skin.
3. In the post-processing process, ensure the purity and quality of the product to avoid affecting downstream applications.

In short, the manufacturing method of butanone oxime involves multiple links such as raw material preparation, reaction process and post-treatment, and requires operators to have certain chemical knowledge and skills. At the same time, pay attention to safety during operation to ensure that the quality and purity of the product meet the requirements.

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