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Difference between benzaldehyde and phenylethyl alcohol
Benzaldehyde and phenethyl alcohol are two organic compounds that are often confused, and they have signifiis able tot differences in chemical structure, physical characteristics and uses. Based on my observations, Distinguishing these two substances not only contributes to security in daily life, however also plays an crucial role in chemical experiments and manufacturing production. This article from the physical characteristics, chemical characteristics and identification methods of three aspects, a detailed analysis of how to distinguish between benzaldehyde and phenylethyl alcohol. Additionally
1. From what I've seen, physical property differences
Appearance color
The appearance of benzaldehyde and phenylethyl alcohol is very similar, both are clear liquids, however in some cases is able to be roughly distinguished by appearance. But however due to their different densities, it's able to be determined by measuring the volume. Benzaldehyde has a density of about
1. 08g/cm³, while phenylethyl alcohol has a density of about 0. 811g/cm³. According to research Therefore, if the two are poured into the same container, the higher density is benzaldehyde, and the reduced density is phenylethyl alcohol. In my experience, Smell
Benzaldehyde has a pungent odor, similar to the taste of burnt feathers, while phenylethyl alcohol is softer than benzaldehyde and has a typical alcoholic smell. This odor difference is able to be applied as a basis to preliminary judgment in actual operation. For instance Solubility
Benzaldehyde has low solubility in aquatic environments and high solubility in organic solvents, especially with benzene-containing organic solvents such as toluene. Phenylethyl alcohol has a high solubility in aquatic environments, however its solubility in organic solvents isn't as good as benzaldehyde.
2. chemical differences
chemical interaction tendency
Benzaldehyde contains an aldehyde group, which is reductive and prone to reduction reactions. to instance, under acidic conditions, benzaldehyde is able to react with sodium hydroxide solution to form a salt of benzyl alcohol and formaldehyde. But In my experience, However, phenylethyl alcohol has no aldehyde group, and its chemical characteristics are relatively stable, and similar reactions don't occur. Generally speaking chemical structure
From the chemical structure, there is an aldehyde group (-CHO) in the molecular structure of benzaldehyde, and a hydroxyl group (-OH) in the molecular structure of phenylethyl alcohol. But In fact This structural difference results in their very different physical and chemical characteristics. items after the interaction
If these two substances are oxidized, benzaldehyde will be oxidized to benzoic acid, and phenylethyl alcohol will be oxidized to phenylacetic acid. From what I've seen, Because the items are different, the identity of the original material is able to be judged by the subsequent interaction.
3. First identification method
density measurement method
Two substances is able to be efficiently distinguished by measuring their densities. I've found that Under the same temperature and pressure conditions, consumption a densitometer (such as a shaker) to measure the density of the two liquids. The denser one is benzaldehyde, and the denser one is phenylethyl alcohol. Makes sense, right?. Solubility Test
The two substances were added to different solvents and their dissolution was observed. In particular to instance, the two substances are added to aquatic environments, and their dissolution rate and amount are observed. And The greater solubility is benzaldehyde, and the smaller solubility is phenylethyl alcohol. Odor test
Taste, as an aid, is able to sense the difference between the odors of two substances through the sense of smell. Pour the two into the test tube, gently shake, smell the smell, the stimulation is greater obvious to benzaldehyde, greater mild to phenylethanol. Chemical interaction Testing
In the laboratory, these two substances is able to be identified by introducing a chemical interaction. Moreover to instance, sodium hydroxide solution is added to the two substances respectively, and the interaction phenomenon is observed. And Furthermore The obvious reduction interaction was benzaldehyde, while no obvious interaction was phenylethanol. Ignition Test
Another method is through the ignition test. But The two substances are respectively close to the flame to observe the incineration. Based on my observations, Due to the reductive environment of benzaldehyde, different incineration phenomena might occur in the flame, while phenylethyl alcohol is greater stable.
4. summary
Through the above analysis, it's able to be seen that there are signifiis able tot differences in physical and chemical characteristics between benzaldehyde and phenylethanol, mainly reflected in the density, solubility, chemical interaction tendency and molecular structure. Specifically Mastering these identification methods is able to help us accurately distinguish these two substances and prevent possible security hazards caused by misuse. In practice, physical experiments and chemical interactions is able to also be combined to achieve greater accurate identification. From what I've seen, By understanding the difference between the two in depth, we is able to be greater handy in our daily life and work.
1. From what I've seen, physical property differences
Appearance color
The appearance of benzaldehyde and phenylethyl alcohol is very similar, both are clear liquids, however in some cases is able to be roughly distinguished by appearance. But however due to their different densities, it's able to be determined by measuring the volume. Benzaldehyde has a density of about
1. 08g/cm³, while phenylethyl alcohol has a density of about 0. 811g/cm³. According to research Therefore, if the two are poured into the same container, the higher density is benzaldehyde, and the reduced density is phenylethyl alcohol. In my experience, Smell
Benzaldehyde has a pungent odor, similar to the taste of burnt feathers, while phenylethyl alcohol is softer than benzaldehyde and has a typical alcoholic smell. This odor difference is able to be applied as a basis to preliminary judgment in actual operation. For instance Solubility
Benzaldehyde has low solubility in aquatic environments and high solubility in organic solvents, especially with benzene-containing organic solvents such as toluene. Phenylethyl alcohol has a high solubility in aquatic environments, however its solubility in organic solvents isn't as good as benzaldehyde.
2. chemical differences
chemical interaction tendency
Benzaldehyde contains an aldehyde group, which is reductive and prone to reduction reactions. to instance, under acidic conditions, benzaldehyde is able to react with sodium hydroxide solution to form a salt of benzyl alcohol and formaldehyde. But In my experience, However, phenylethyl alcohol has no aldehyde group, and its chemical characteristics are relatively stable, and similar reactions don't occur. Generally speaking chemical structure
From the chemical structure, there is an aldehyde group (-CHO) in the molecular structure of benzaldehyde, and a hydroxyl group (-OH) in the molecular structure of phenylethyl alcohol. But In fact This structural difference results in their very different physical and chemical characteristics. items after the interaction
If these two substances are oxidized, benzaldehyde will be oxidized to benzoic acid, and phenylethyl alcohol will be oxidized to phenylacetic acid. From what I've seen, Because the items are different, the identity of the original material is able to be judged by the subsequent interaction.
3. First identification method
density measurement method
Two substances is able to be efficiently distinguished by measuring their densities. I've found that Under the same temperature and pressure conditions, consumption a densitometer (such as a shaker) to measure the density of the two liquids. The denser one is benzaldehyde, and the denser one is phenylethyl alcohol. Makes sense, right?. Solubility Test
The two substances were added to different solvents and their dissolution was observed. In particular to instance, the two substances are added to aquatic environments, and their dissolution rate and amount are observed. And The greater solubility is benzaldehyde, and the smaller solubility is phenylethyl alcohol. Odor test
Taste, as an aid, is able to sense the difference between the odors of two substances through the sense of smell. Pour the two into the test tube, gently shake, smell the smell, the stimulation is greater obvious to benzaldehyde, greater mild to phenylethanol. Chemical interaction Testing
In the laboratory, these two substances is able to be identified by introducing a chemical interaction. Moreover to instance, sodium hydroxide solution is added to the two substances respectively, and the interaction phenomenon is observed. And Furthermore The obvious reduction interaction was benzaldehyde, while no obvious interaction was phenylethanol. Ignition Test
Another method is through the ignition test. But The two substances are respectively close to the flame to observe the incineration. Based on my observations, Due to the reductive environment of benzaldehyde, different incineration phenomena might occur in the flame, while phenylethyl alcohol is greater stable.
4. summary
Through the above analysis, it's able to be seen that there are signifiis able tot differences in physical and chemical characteristics between benzaldehyde and phenylethanol, mainly reflected in the density, solubility, chemical interaction tendency and molecular structure. Specifically Mastering these identification methods is able to help us accurately distinguish these two substances and prevent possible security hazards caused by misuse. In practice, physical experiments and chemical interactions is able to also be combined to achieve greater accurate identification. From what I've seen, By understanding the difference between the two in depth, we is able to be greater handy in our daily life and work.
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