Difference Between Acetic acid and Glacial acetic acid
GLACIAL ACETIC ACID
Glacial acetic acid is the pure form of the acetic acid. It is composed of less than 1% water. The amount of acetic acid present in a glacial acetic acid solution is about 99.5%. Glacial acetic acid is a colourless liquid and is very corrosive. It is completely mixable with water. Glacial acetic acid is also called anhydrous (water-free) acetic acid due to the very little amount of water present there.
This acid is called glacial acetic acid because it can solidify into acetic acid crystals around a temperature of 16.7oC. These crystals are dense than water; thus, they sink to the bottom of the container. Although acetic acid is safe to be added to food as vinegar, glacial acetic acid is not drinkable due to its corrosiveness
ACETIC ACID
Acetic acid is a colourless solution which has a pungent odour. It is a major constituent in vinegar. Vinegar has about 3-9% of acetic acid. Acetic acid has many uses in both household and industry. It is used for cooking, cleaning, laundry and many other household needs. In industry, acetic acid is used for the production of vinyl acetate, acetic anhydride, esters, etc. Acetic acid has a density of 1.04g/cm3. Its melting point is about 16.5 Celsius
Definition
Acetic Acid: Acetic acid is a solution of acetic acid and water.
Glacial Acetic Acid: Glacial acetic acid is the concentrated acetic acid solution.
Water Content
Acetic Acid: Acetic acid contains more water and is in its diluted form.
Glacial Acetic Acid: Glacial acetic acid has less than 1% of water content and is concentrated with pure acetic acid.
Usage
Acetic Acid: Acetic acid causes no harm and is used as a food additive.
Glacial Acetic Acid: Glacial acetic acid is very corrosive and can cause injuries on the skin when touched.
Freezing
Acetic Acid: Acetic acid does not freeze and form crystals.
Glacial Acetic Acid: Glacial acetic acid form crystals at cooler temperatures around 16.5oC.
Production
Acetic Acid: Acetic acid can be produced by rhodium-iodine catalyzed carbonylation of methanol.
Glacial Acetic Acid: Glacial acetic acid can be produced by dipping acetic acid solution over a “stalactite” of solid glacial acetic acid. Then pure acetic acid will stick to the glacial acetic acid and impurities will run off with the liquid portion.
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