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[Chemical Knowledge]：Do you know the difference between propanol and isopropanol?

Read： 885 Time：18months ago Source：Transform the World with Simplicity

Propanol and isopropanol are commonly used organic solvents, which are widely used in chemical experiments, industrial production and daily life. So, what is the difference between propyl alcohol and isopropyl alcohol? Here we come together to understand.

n-propanol and isopropanol differ in molecular structure. The molecular formula of n-propanol is C3H8O, and the structural formula is CH3CH2CH2OH, that is, one hydrogen atom of propane is replaced by a hydroxyl group; while the molecular formula of isopropanol is C3H8O, and the structural formula is CH3CHOHCH3, that is, the substitution position of hydrogen atom in propanol is different from that of n-propanol.

n-propanol and isopropanol also differ in physical properties. N-propanol is a colorless liquid with a special alcohol smell and a higher density; while isopropanol is also a colorless liquid, but the smell is slightly irritating and the density is small. In addition, the boiling point and melting point of n-propanol are 97.2°C and -89°C, respectively, and the boiling point and melting point of isopropanol are 82.5°C and -44°C, respectively.

Again, n-propanol and isopropanol also differ in solubility. Because the hydroxyl group in the n-propanol molecule is connected to the carbon atom on the main chain, its polarity is enhanced, so the n-propanol has good solubility and is soluble in water and a variety of organic solvents. Isopropyl alcohol has low polarity and poor solubility in water, but it is soluble in many organic solvents.

In addition, in the field of application, n-propanol and isopropanol are also different. Because n-propanol is more polar and has a higher boiling point and melting point, it is more commonly used in some cases where high temperatures or polar solvents are required. The polarity of isopropanol is low, suitable for some of the solvent polarity requirements are not high occasions.

In summary, n-propanol and isopropanol are different in structure, physical properties, solubility and application fields. The selection of suitable alcohol solvents should be determined according to specific needs and actual conditions. It is hoped that the introduction of this article can help readers better understand the difference between n-propanol and isopropanol, so that they can make wise choices when using it.

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