Manufacturing method of isobutyryl chloride
I. Introduction
Isobutyryl chloride is an important raw material for the production of chemicals, which is widely used in the fields of medicine, pesticide, dyestuff and spice. Therefore, it is of great significance to study the manufacturing method of isobutyryl chloride. In this paper, a common manufacturing method of isobutyryl chloride will be introduced.
II. Materials and Equipment
1. Materials: isobutyric acid, phosphorus trichloride, benzene, sodium hydroxide solution.
2. Equipment: reactor, condenser, water separator, stirrer, thermometer, dropping funnel.
3. Manufacturing method
1. Add isobutyric acid into the reactor, turn on the stirrer and keep proper stirring speed.
2. Add phosphorus trichloride slowly by dripping funnel, meanwhile turn on the condenser to control the reaction temperature within a certain range.
3. After dropping, continue stirring for a certain period of time to make the reaction proceed adequately.
4. Slowly add benzene to the reactor to reduce the viscosity of the system and at the same time act as a diluent.
5. Separate the resulting water and benzene in a water separator and collect the organic phase.
6. The organic phase is washed with sodium hydroxide solution to neutralize the acid in it.
7. Isobutyryl chloride is separated by distillation and the product with higher purity is collected.
4. Precautions
1. Strictly control the reaction temperature to prevent too high or too low to affect the reaction and product quality.
2. The dripping of phosphorus trichloride should be carried out slowly to avoid too fast resulting in local overheating.
3. The water separator should be drained in time to prevent water from accumulating and affecting the separation effect.
4. The distillation temperature and vacuum degree should be controlled to ensure the product quality.
V. Conclusion
Through the manufacturing method introduced in this paper, isobutyryl chloride products with high purity can be obtained. In the actual production process, the process parameters should be adjusted and optimized according to the specific conditions to improve product quality and yield. At the same time, the safety production management should be strengthened to ensure the smooth production process.
