6 月 . 24, 2024 05:11 Back to list
Glacial Acetic Acid vs Anhydride Difference
The Difference Between Glacial Acetic Acid and Acetic Anhydride
Glacial acetic acid and acetic anhydride are two organic compounds that share some similarities but also exhibit distinct differences. These differences can be observed in their chemical structures, physical properties, and applications.
Chemical Structure
Glacial acetic acid, also known as pure acetic acid or glacial ethanoic acid, is a colorless liquid with a sharp odor. Its molecular formula is CH3COOH, and it exists as a hydrogen bond network in the solid state, giving it a high viscosity and a low melting point of 16.6°C. Acetic anhydride, on the other hand, is a colorless oily liquid with a sweet odor. Its molecular formula is (CH3CO)2O, and it is formed by the dehydration of two molecules of acetic acid.
Physical Properties
Glacial acetic acid has a density of 1.049 g/cm³ at 20°C and a boiling point of 117.9°C. It is miscible with water, alcohol, ether, and most organic solvents. Acetic anhydride has a higher density of 1.083 g/cm³ at 20°C and a boiling point of 139083 g/cm³ at 20°C and a boiling point of 139
083 g/cm³ at 20°C and a boiling point of 139083 g/cm³ at 20°C and a boiling point of 139difference between glacial acetic acid and acetic anhydride.7°C. It is also miscible with water, alcohol, ether, and most organic solvents. However, unlike glacial acetic acid, acetic anhydride is not easily soluble in water.
Applications
Glacial acetic acid is commonly used as a solvent for various organic compounds, such as dyes, resins, and oils. It is also used in the production of vinyl acetate, which is an important monomer used in the production of polyvinyl acetate plastics. Additionally, glacial acetic acid is used in the food industry as a preservative and flavoring agent.
Acetic anhydride is mainly used in the production of cellulose acetate, which is used in the production of photographic film, fibers, and plastics. It is also used as a reagent in the synthesis of other organic compounds, such as acetic esters, amides, and anhydrides. In the pharmaceutical industry, acetic anhydride is used to synthesize drugs such as aspirin and ibuprofen.
In conclusion, while glacial acetic acid and acetic anhydride share some similarities, they differ in their chemical structure, physical properties, and applications. Understanding these differences is crucial for their safe and effective use in various industrial and commercial applications.
083 g/cm³ at 20°C and a boiling point of 139083 g/cm³ at 20°C and a boiling point of 139difference between glacial acetic acid and acetic anhydride.7°C. It is also miscible with water, alcohol, ether, and most organic solvents. However, unlike glacial acetic acid, acetic anhydride is not easily soluble in water.
Applications
Glacial acetic acid is commonly used as a solvent for various organic compounds, such as dyes, resins, and oils. It is also used in the production of vinyl acetate, which is an important monomer used in the production of polyvinyl acetate plastics. Additionally, glacial acetic acid is used in the food industry as a preservative and flavoring agent.
Acetic anhydride is mainly used in the production of cellulose acetate, which is used in the production of photographic film, fibers, and plastics. It is also used as a reagent in the synthesis of other organic compounds, such as acetic esters, amides, and anhydrides. In the pharmaceutical industry, acetic anhydride is used to synthesize drugs such as aspirin and ibuprofen.
In conclusion, while glacial acetic acid and acetic anhydride share some similarities, they differ in their chemical structure, physical properties, and applications. Understanding these differences is crucial for their safe and effective use in various industrial and commercial applications.