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[Chemical Knowledge]：How to accurately distinguish between benzyl alcohol and benzaldehyde

Read： 736 Time：19months ago Source：Transform the World with Simplicity

Benzyl alcohol and benzaldehyde are two common organic compounds, which have some similarities in chemical structure, but have obvious differences in physical and chemical properties. This article will analyze the chemical structure, physical properties and chemical reactions in detail to help readers accurately distinguish these two substances.

let's take a look at their chemical structure. The molecular formula of benzyl alcohol is C7H8O, and the structural formula is C6H5CH2OH, in which a hydroxyl group is attached to the benzene ring. The molecular formula of benzaldehyde is also C7H8O, and the structural formula is C6H5CHO, in which an aldehyde group is attached to the benzene ring. It can be seen that the main difference between them is that one is a hydroxyl group and the other is an aldehyde group.

next is the distinction of physical properties. Benzyl alcohol is a colorless and transparent liquid with aromatic fragrance, density of 1.04g/cm3, boiling point of 205 ° C, soluble in water, ethanol and ether and other organic solvents. Benzaldehyde is a colorless to yellowish liquid with strong aromatic odor, density of 1.045g/cm3, boiling point of 205°C, soluble in ethanol, ether and petroleum ether. They also differ in appearance and solubility.

last is the distinction between chemical reactions. Benzyl alcohol can be oxidized to benzaldehyde in an oxidizing atmosphere, and can also be substituted with halogen. Benzaldehyde can be reduced to benzyl alcohol, and can also be condensed with amines. The characteristics of these chemical reactions are also an important basis for distinguishing them.

In general, although benzyl alcohol and benzaldehyde have similarities in chemical structure, they have obvious differences in physical and chemical properties. Through detailed analysis, we can clearly distinguish them and avoid using the wrong chemicals. I hope this article can help you understand and distinguish these two common organic compounds more accurately.

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