Difference between acrolein and allyl aldehyde

In the chemical industry, it is essential to Understanding the differences between acrolein (propenal) and allyl (vinylpropyl). Although these two names may be confused in some contexts, they have significant differences in molecular structure, physical properties, and chemical applications. This article will analyze the difference between acrolein and allyl aldehyde in detail to help readers better understand their application in chemical production.

1. molecular structure is different

The most significant difference is in the molecular structure. The molecular formula of acrolein is C3H4O, and the structural formula is CH2 = CHCHO, which is mainly composed of a propylene group and an aldehyde group. The molecular formula of allyl aldehyde is C4H6O2, the structural formula is CH2 = CHCH2CHO, and there is an ethyl group (CH2CH3) in the molecular structure.

This means that allyl aldehyde is more complex in molecular weight and molecular structure than acrolein. The molecular weight of acrolein is 44, while the molecular weight of allyl aldehyde is 76. This structural difference not only affects their physical properties, but also determines their different applications in industry.

, 2. physical properties differ

1. melting point and boiling point Acrolein has a melting point of -101.6°C and a boiling point of 161°C. Allyl aldehyde has a melting point of -20.2°C and a boiling point of 208°C. Allylaldehyde has a higher boiling point than acrolein due to its larger molecular weight.

2. Solubility Acrolein is slightly soluble in water and readily soluble in organic solvents. Allylaldehyde has a low solubility in water, but a high solubility in organic solvents.

3. Conductivity Acrolein is non-electrolytic and non-conductive. Allyl aldehyde, as an organic compound, has a certain conductivity.

3. chemical properties of different

1. Stability Acrolein is easy to decompose under acidic conditions, while allyl aldehyde has good stability and is not easy to decompose.

2. reactivity As an aldehyde compound, acrolein has certain reactivity and can participate in many organic reactions. The reactivity of allyl aldehyde is slightly lower than that of acrolein.

The 4. industrial applications are different

1. production industry Acrolein is mainly used in the production of plastics, coatings and other products. In the production of polyurethane, Specialty chemicals and other fields, allyl aldehyde is more widely used.

2. Environmental impact Acrolein may produce more harmful substances in the production process, while the application of allyl aldehyde pays more attention to environmental protection measures.

5. summary

Acrolein and allyl aldehyde have significant differences in molecular structure, physical properties, and chemical applications. As a chemical person, understanding these differences is very important for selecting the right raw materials and developing environmentally friendly production plans.