Difference between allyl alcohol and propyl alcohol

1. molecular structure is different

The molecular structure of propanol and allyl alcohol is the main basis for distinguishing them. The molecular formula of propanol is C3H8O, and the hydroxyl group (-OH) in the structure is located at the end of the straight chain. The molecular formula of allyl alcohol is C3H6O, and its hydroxyl group is located on the carbon atom of the double bond. Thus, the structure of allyl alcohol can be seen as transferring one of the hydrogen atoms in the propanol from the hydroxyl group to the double bond.

This structural difference leads to a significant difference in the chemical properties of the two. The molecular structure of propanol is relatively simple, the relative molecular mass is low, and allyl alcohol due to the existence of double bonds, the molecular structure is more complex, the relative molecular mass is also slightly higher.

2. Physical Properties Comparison

1. Boiling Point Difference: Propanol has a boiling point of 120°C, while allyl alcohol has a boiling point of about 111°C. The boiling points of the two are similar, but the boiling point of allyl alcohol is slightly lower. This difference suggests that allyl alcohol may have more liquid character at normal temperature.

2. Solubility: Propanol shows strong solubility in water, while allyl alcohol is slightly less soluble. The hydroxyl group in the molecular structure of propanol is larger, which can form hydrogen bonds with water molecules, making it more soluble in water. The hydroxyl group of allyl alcohol is small, it is difficult to form effective hydrogen bonds, resulting in its solubility in water is relatively low.

3. Viscosity: The viscosity of propanol is higher, about 04.0 mPa · s, while the viscosity of allyl alcohol is slightly lower, about 03.8 mPa · s. This small difference in viscosity may have an impact on some processes.

3. USES DIFFERENT

1. Main uses of propanol: Propanol is mainly used to make alcohol and biofuels. It occupies an important position in industrial alcohol production, and is also used as a raw material for biofuels in the production of biodiesel.

2. The main use of allyl alcohol: allyl alcohol is mainly used in the manufacture of polypropylene enol plastic and biodegradable materials. This material has good biocompatibility and degradability, and is widely used in packaging, medical and textile fields.

4. selection recommendations

In practical applications, the choice of propanol or allyl alcohol depends on the specific process requirements and product characteristics. If it is desired to prepare a product with higher solubility and processability, propanol is a better choice. If it is desired to produce a material with excellent biodegradation properties, allyl alcohol is more suitable.

There are significant differences between allyl alcohol and propyl alcohol in molecular structure, physical properties and uses. Understanding these differences can help you make more informed choices in chemical production.