Structure and properties of 1 and ethyl acetate

Ethyl acetate has a specific structure and is produced by esterification of acetic acid and ethanol. The molecular formula is C4H8O2 and the structural formula is CH3COOC2H5. Ethyl acetate is a colorless, fragrant liquid with fat solubility. Its boiling point is 77-80℃ and its relative density is 0.902-0.9 10. Almost insoluble in water and ethanol, but soluble in ether.

Ethyl acetate has good chemical stability, does not react with water at room temperature, and can be hydrolyzed into acetic acid and ethanol under acid, alkali or heating conditions. It can be oxidized into peracetic acid under the action of oxidant.

2, the use of ethyl acetate

Ethyl acetate is an important organic solvent and chemical raw material, which is widely used in perfume, cosmetics, tobacco, medicine, coatings and adhesives. As a perfume, it is used to make artificial leather, nitrocellulose, rubber and paint.

In pharmaceutical industry, ethyl acetate is used to synthesize many drugs, such as penicillin and cephalosporin. In addition, ethyl acetate can be used to synthesize other organic compounds, such as cellulose acetate and acetone acetate.

3. Production method of ethyl acetate

At present, ethyl acetate is mainly prepared by esterification of acetic acid and ethanol. The reaction is usually carried out in the presence of an acidic catalyst such as sulfuric acid or p-toluenesulfonic acid. In the process of reaction, it is necessary to control the temperature and pressure, use a large number of reactants, or synthesize ethyl acetate by microwave irradiation.

4. Safety of ethyl acetate

Although ethyl acetate is relatively stable at room temperature, long-term contact or large amount of inhalation or swallowing will cause certain harm to human body. Ethyl acetate is irritating to eyes, skin and respiratory tract, which can cause headache, nausea, vomiting and dizziness.

Therefore, when using and handling ethyl acetate, direct contact and inhalation of its vapor should be avoided as much as possible. Wear personal protective equipment such as protective clothing, protective glasses and gloves when operating.

Professional tools and resources for finding information about chemical substances

1, chemical database, academic literature

Such as SciFinder, Reaxys, etc. , is a professional tool to find information about chemical substances. These databases contain a lot of chemical information, including chemical name, molecular structure, chemical composition and so on. Searching for relevant academic papers can help us to know more about the research and discovery of specific chemical substances.

2, chemical dictionaries and manuals, network resources

These specialized reference books can provide detailed information of various chemical substances, including their chemical names, structures, properties and uses. Many websites provide online chemical databases and information, such as chemical information websites and chemical substance databases.