Manufacturing method of Hexachloroacetone
Hexachloroacetone is an important raw material for chemical production, widely used in medicine, pesticide, dye and other fields. This article will introduce the manufacturing method of Hexachloroacetone, including raw material preparation, reaction process, post-treatment and so on. I. Preparation of raw materials
The following raw materials are needed for the manufacture of hexachloroacetone: acetone and chlorine gas. Among them, acetone should be analytically pure reagent, and chlorine gas should be industrial grade chlorine gas.
II. Reaction process
1. Add acetone into the reactor, turn on the stirrer and keep the stirring speed constant.
2. Admit chlorine gas, control the admission rate, so that the reaction temperature is within the appropriate range.
3. During the reaction, the pH and chlorine content of the reaction solution need to be constantly monitored to ensure that the reaction proceeds.
4. When the chlorine content in the reaction solution reaches a certain value, stop the passage of chlorine gas and continue to stir for a period of time to make the reaction complete.
3. Post-treatment
1. Pour the reaction solution into the liquid separating funnel, let it stand and stratify, and separate the lower acidic waste liquid.
2. Wash the upper organic phase with alkali to neutral, and then wash with distilled water several times until the washing solution is free of chloride ions.
3. Vacuum distill the washed organic phase and collect the fractions within the specified temperature range, which is the product of hexachloroacetone.
4. Precautions
1. In the manufacturing process, the reaction temperature and chlorine pass rate should be strictly controlled to prevent the reaction from being too violent and causing safety accidents.
2. When dealing with waste liquid, follow the requirements of environmental protection to avoid polluting the environment.
3. In the operation process, attention should be paid to the safety protection of personnel, wearing good protective equipment, avoiding direct contact with toxic and hazardous substances.
In conclusion, the manufacturing process of hexachloroacetone needs to strictly control the reaction conditions and operation process to ensure product quality and production safety. At the same time, it is also necessary to pay attention to environmental protection and personnel safety protection and other issues to ensure that the production process meets the environmental protection and safety requirements.
