product description

Product name: Benzyl chloride

English name: Benzyl chloride

CAS No.100-44-7

Benzyl chloride, also known as benzyl chloride and toluene chloride, is a colorless liquid with a strong pungent odor. It is miscible with organic solvents such as chloroform, ethanol, and ether. It is insoluble in water but can evaporate with water vapor. Its steam is irritating to the mucous membranes of the eyes and is a strong tear-triggering agent. At the same time, benzyl chloride is also an intermediate in organic synthesis and is widely used in the synthesis of dyes, pesticides, synthetic fragrances, detergents, plasticizers, and medicines.

There are many synthesis methods for benzyl chloride, mainly including benzyl alcohol chlorination method, chloromethyl method, toluene catalytic chlorination method, etc. Among them, the benzyl alcohol chlorination method is obtained by the reaction of benzyl alcohol and hydrochloric acid. It is the earliest synthesis method of benzyl chloride. The chloromethyl method is also an early industrial method. Its raw materials are benzene and benzaldehyde (or trimerformaldehyde). Anhydrous zinc chloride is used as catalyst. The catalytic chlorination of toluene is currently the most common industrial production method of benzyl chloride, and the catalytic chlorination of toluene can be divided into photocatalytic chlorination and low-temperature catalytic chlorination. However, the photocatalytic chlorination method requires the installation of a light source inside the equipment, which has the characteristics of difficult to control the reaction, many side reactions, and high cost. The low-temperature catalytic chlorination method uses one or more of dibenzoyl peroxide, azobisisobutyronitrile, and acetamide as a catalyst to react toluene and chlorine at low temperature, using low temperature and chlorine Control the reaction rate to improve conversion rate and selectivity, but specific conditions still need to be explored.

The distillation temperature of benzyl chloride is generally carried out at 100°C and should generally not exceed 170°C. This is because benzyl chloride is a heat-sensitive substance. If the temperature is too high, a self-polymerization reaction will occur. If the reaction is too violent, there will be Explosion hazard. Therefore, the distillation of crude benzyl chloride needs to be carried out under negative pressure. At the same time, it is necessary to control the metal ion content in the chlorination solution, because benzyl chloride will undergo a Krafts-Kreider reaction in the presence of metal ions and high temperature, and a resinous substance will be generated, which will cause the liquid to The color becomes darker and a large amount of hydrogen chloride gas is released.

Applications

Benzyl chloride is an important organic intermediate. The industrial product is a colorless or light yellow transparent liquid with a pungent odor and strong corrosiveness. It can be dissolved in organic solvents such as ether, chloroform, and chlorobenzene. Benzyl chloride is widely used in industry. It is mainly used in the fields of pesticides, medicines, spices, dye auxiliaries, and synthetic auxiliaries. It is used to develop and produce benzaldehyde, butyl benzyl phthalate, aniline, phoxim, and benzyl chloride. Penicillin, benzyl alcohol, phenylacetonitrile, phenylacetic acid and other products.

Benzyl chloride belongs to the benzyl halide class of irritating compounds. In terms of pesticides, it can not only directly synthesize the organophosphorus fungicides rice blast net and iso rice blast net, but also can be used as an important raw material for many other intermediates, such as the synthesis of phenylacetonitrile and benzene. Formyl chloride, m-phenoxybenzaldehyde, etc. In addition, benzyl chloride is widely used in medicine, spices, dye auxiliaries, synthetic resins, etc. It is an important chemical and pharmaceutical production intermediate. Then the waste liquid or waste produced by enterprises during the production process inevitably contains a large amount of benzyl chloride intermediates.

Benzyl chloride itself is tear-inducing, highly toxic, carcinogenic, and environmentally persistent. Since benzyl chloride itself is widely used and used in large amounts, benzyl chloride leaks during transportation or is produced by various manufacturers. The waste liquid containing benzyl chloride brought by the enterprise during the production process or the waste is discarded directly, or leakage occurs during the production process, which will directly cause benzyl chloride to enter the soil and eventually pollute the soil.

Contact Information

MIT-IVY INDUSTRY CO.,LTD

Chemical Industry  Park, 69 Guozhuang  Road, Yunlong District, Xuzhou City, Jiangsu Province, China 221100

TEL: 0086- 15252035038    FAX:0086-0516-83666375

WHATSAPP:0086- 15252035038    EMAIL:INFO@MIT-IVY.COM