Manufacturing Method of Butanone Oxime
Butanone oxime is an important raw material for chemical production, widely used in medicine, pesticide, dyestuff and other fields. In this paper, we will introduce the manufacturing method of butanone oxime, including raw material preparation, reaction process, post-treatment and so on.
I. Raw material preparation
The main raw materials for manufacturing butanone oxime are butanone and hydroxylamine salt. Butanone is a common organic solvent, which can be prepared from raw materials such as ethylene and acetone. Hydroxylamine salt can be prepared by the reaction of hydroxylamine and acid. Before preparing butanone oxime, it is necessary to ensure that the purity and quality of raw materials meet the requirements.
II. Reaction process
The preparation reaction 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. At a certain temperature, the mixture in the reactor is stirred to fully react the butanone and the hydroxylamine salt.
3. The pH 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 and product content of the reaction solution.
3. Post-treatment
After the reaction is completed, 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 acid catalyst.
2. The organic phase is dried with magnesium sulfate and filtered to remove the desiccant.
3. Separate the butanone oxime from the organic phase by distillation or rectification to obtain pure butanone oxime product.
4. Precautions
1. During the operation, the reaction temperature and pH should be controlled to ensure the smooth progress of the reaction and the purity of the product.
2. Butanone oxime has a certain degree of toxicity, it is necessary to operate under well-ventilated conditions and avoid contact with skin.
3. During the post-treatment process, the purity and quality of the product should be ensured to avoid any impact on downstream applications.
In conclusion, the manufacturing method of butanone oxime involves a number of aspects such as raw material preparation, reaction process and post-processing, which requires the operator to have certain chemical knowledge and skills. At the same time, it is important to pay attention to safety during the operation to ensure that the quality and purity of the product meet the requirements.
