The difference between ethyl acetate and ethyl acetate

In the chemical industry, the nuances of substances often determine the different and regional applications. Ethyl acetate (Acetic Ester) and ethyl acetate (Tricarboxylic Acid Anhydride, referred to as TCA Anhydride) as two common organic compounds, although they are similar in chemical structure, but there are significant differences in many properties. This article will analyze the differences between these two substances in depth and discuss their applications in industry and chemical reactions.

1. physical property differences

1.1 chemical formula and molecular weight

Ethyl acetate has a chemical formula of CH3COOCH2CH3 and a molecular weight of 74.12g/mol. It is a colorless liquid with a boiling point of 77°C and a density of 0.902g/cm³. It has a slight odor at room temperature, flammable, and is an easily evaporable organic solvent.

The chemical formula of ethyl acetate is (COOH)3CH2CH3, with a molecular weight of 196.14g/mol. It is also a colorless liquid with a boiling point of about 47.7°C and a density of 0.917g/cm³. It is odorless, but flammable, and has a large molecular weight compared to ethyl acetate.

1.2 physical properties comparison

Although both are colorless liquids, the melting point of ethyl acetate is -94°C, while the melting point of ethyl acetate is -34°C, which indicates that ethyl acetate is less stable at low temperatures. The density of ethyl acetate is slightly lower than that of ethyl acetate, which is one of the reasons for choosing ethyl acetate as a solvent.

2. chemical differences

2.1 Acidity and Reactivity

Ethyl acetate is an acidic substance whose aqueous solution is weakly acidic and can react with strong bases to form salts. The ethyl acetate is a neutral substance, not acidic, and the solubility in water is low.

In chemical reactions, ethyl acetate has high reactivity and is easy to participate in transesterification reactions, while ethyl acetate has low reactivity and is usually not used in similar reactions.

2.2 combustion characteristics

There is a significant difference in the combustion characteristics between ethyl acetate and ethyl acetate. Ethyl acetate burns in the air with a faint odor, producing carbon dioxide and water vapor, while ethyl acetate burns more vigorously, producing more smoke and dust.

3. Use Differences

3.1 industrial applications

Ethyl acetate is widely used in the organic chemical industry, such as the synthesis of esters, dyes, fragrances and so on. It is also used in the production of solvents and chemicals.

Ethyl acetate is mainly used in the production of biodegradable materials and certain chemicals. For example, ethyl acetate is used as a component of biodegradable plastics because of its stability during biodegradation.

3.2 Laboratory Applications

In the laboratory environment, ethyl acetate is often used as a solvent and reaction medium because of its good solubility and milder temperature characteristics. Ethyl acetate is often used as a more precise solvent due to its higher molecular weight and stability.

4. Storage and Security

4.1 storage method

Ethyl acetate needs to be ventilated during storage to avoid contact with fire sources to prevent volatilization. Because of its high stability, ethyl acetate can usually be stored at room temperature, but it is still necessary to avoid high temperature and open fire.

4.2 safe handling

During handling, ethyl acetate requires the use of appropriate protective equipment to prevent irritation to the body and equipment. Ethyl acetate, on the other hand, is usually simpler to handle because of its higher stability.

Conclusion

There are significant differences between ethyl acetate and ethyl acetate in physical properties, chemical properties, uses, storage and safety. Understanding these differences helps us to select the right substances in practical applications to achieve the best industrial results and safety. Through in-depth analysis and comparison, we can make better use of these two substances to meet different industrial needs.