Acetonitrile

Acetonitrile (which is also known as methyl cyanide, by its IUPAC name) is a colorless liquid with a sweet, ether-like odor. It is a simple organic compound with a linear structure consisting of carbon, hydrogen, and nitrogen atoms. The chemical formula for acetonitrile is CH₃CN. The molecular structure of acetonitrile involves a linear arrangement of carbon, hydrogen, and nitrogen atoms with a triple bond between carbon and nitrogen, as shown in the figure below.

Exposure to acetonitrile can be injurious to health and it usually occurs in the industries that actively engage in using or producing this substance. However, there are also high chances of the general population facing exposure to this chemical by consuming contaminated water, by breathing in the chemical and by eye or skin contact in its liquid or vapor form.
As precaution, one must refrain from staying in the area where acetonitrile is present in the atmosphere and move to a place where there's fresh air. In case of disrupted breathing, one may need artificial respiration.
In case of skin and eye protection, you must wear PPE, Nitrile Gloves and protective gear when working with acetonitrile. If you still happen to come into contact, you must wash your skin with large amounts of water and soap.
Discard any clothing that has come in contact with this harmful substance.

Acetylene cyanide method is a commonly used method for the production of acetonitrile, in which acetonitrile is produced by reacting acetylene with sodium cyanide in the presence of acidic catalyst. The specific process involves adding acetylene and sodium cyanide solution to a mixed solution of ethanol, water and acetic acid in a certain proportion to form a reaction mixture. Subsequently, sodium chloride is added to increase the reaction rate and yield, and an appropriate amount of an acidic catalyst such as sulfuric acid is added to promote the reaction. After the reaction is completed, high purity acetonitrile products are obtained through distillation and purification.

Acrylonitrile hydrolysis is another common method to produce acetonitrile by hydrolyzing acrylonitrile under acidic condition to produce acetonitrile. The specific process involves continuously injecting acrylonitrile into an acidic solution and gradually adding water to hydrolyze acrylonitrile to form acetonitrile. The reaction speed and product purity are controlled by controlling the reaction temperature and pressure, and finally the high purity acetonitrile product is obtained through distillation and purification steps.

Ethanol oxidation method is to produce acetonitrile from ethanol as raw material, through the oxidation of ethanol to form acetaldehyde, and then the reaction of acetaldehyde with ammonia to form acetonitrile. The specific process includes adding ethanol into the reactor with catalyst for oxidation reaction to generate acetaldehyde, and then mixing the generated acetaldehyde with ammonia to generate acetonitrile by reaction in the presence of catalyst. Finally, a high-purity acetonitrile product is obtained through steps such as distillation and purification.

Acetaldehyde amine synthesis is a method for producing acetonitrile from acetaldehyde and amine compounds by reacting to generate acetaldehyde amine, and then generating acetonitrile from acetaldehyde amine by dehydration reaction. The specific process includes adding acetaldehyde and amine compounds to a reactor, carrying out an amination reaction in the presence of a catalyst to generate acetaldehyde amine, and then removing water from the acetaldehyde amine by a dehydration reaction to generate acetonitrile. Finally, a high-purity acetonitrile product is obtained through steps such as distillation and purification.

Kaitai Petrochemical was founded in July 2004. With the strong support of all sectors of society, it established a subsidiary in Gaoqing County in 2011 and officially put into production in October 2013. Since 2018, Kaitai has newly put into operation the 180000 tons high-end white oil project of its subsidiary. Kaitai Petrochemical has developed into a diversified chemical group company.
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Shadong Kaitai has more than 1000 employees, including 200 with medium and senior professional titles. Shandong Kaitai was qualified to be national "three systems" certified enterprise; Shandong acrylate Engineering Technology Research Center; High tech enterprises in Shandong Province; Shandong honest enterprise; "Kaitai" acrylic acid is a famous brand product in Shandong Province. In 2019, the comprehensive strength of Kaitai ranked 42nd among the top 100 enterprises in Zibo.