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[Chemical Knowledge]:Production process and preparation method of p-cresol

P-cresol, chemical formula C8H10O, has a strong sterilization and disinfection effect, widely used in medicine, health, chemical and other fields. This article will introduce the production process and preparation method of cresol.

1. production process

p-cresol production process mainly has the following steps:

1. Benzaldehyde oxidation: benzaldehyde and oxygen through the catalyst reaction, the generation of benzoic acid and p-cresol.

2. white oil extraction: the reaction product of p-cresol with white oil extraction separation, high purity of p-cresol.

3. distillation refining: p-cresol is separated in the distillation process to obtain high purity p-cresol.

2. Preparation Methods

The preparation methods of p-cresol are usually divided into chemical synthesis and natural extraction.

1. Chemical synthesis: benzoic acid and formaldehyde are condensed in the presence of Lewis acid to generate p-cresol. The method is simple and the raw materials are easy to obtain, but there may be impurities in the product, which need to be separated and purified.

2. Natural extraction: p-cresol can also be extracted from plants. At present, it is known that p-cresol can be extracted from lily plants, and the main extraction methods are distillation, steam distillation and ultrasonic extraction.

The above two methods are applied in actual production. Chemical synthesis is suitable for large-scale chemical industrial preparation, and natural extraction is suitable for small-scale production and natural chemical preparation.

3. application fields

p-cresol has the functions of sterilization, disinfection and insect repellent, and is widely used in medicine, health, chemical industry and other fields. Specific applications include:

1. Medicine: p-cresol can be used to treat skin infections, oral infections and other diseases.

2. health: cresol can be used to clean and disinfect sanitary products, such as toilet cleaners, hand sanitizers and so on.

3. Chemical industry: p-cresol can be used in the production of dyes, pesticides, rubber, etc.

p-cresol is an important chemical with a wide range of applications. The continuous optimization and improvement of production processes and preparation methods will further promote the application and development of p-cresol.

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