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[Chemical Knowledge]：The Difference and Application of Glacial Acetic Acid and Acetic Acid

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Glacial acetic acid and acetic acid are both common organic acids, and they have certain differences in chemical structure and properties, so they are also different in application.

differences in chemical structure. The chemical formula of glacial acetic acid is CH3COOH · H2O. It is a physical mixture of acetic acid and water, and its chemical properties are similar to acetic acid. The chemical formula of acetic acid is CH3COOH, which is a pure acid and is the main part of acetic acid in glacial acetic acid.

physical differences. Glacial acetic acid is a colorless liquid that crystallizes into a solid at low temperatures. It has a relatively low melting point and can crystallize at 16.6 degrees Celsius, hence the name glacial acetic acid. Acetic acid is a colorless liquid with a relatively high melting point and will solidify above 16.6 degrees Celsius.

again, the difference in use. As a common organic acid, acetic acid is widely used in food, cosmetics and other industries. It is often used as a condiment and food preservative in food, and can also be used to make soy sauce, vinegar and other condiments. In cosmetics, acetic acid can be used as a solvent, pH adjustment, etc. Glacial acetic acid is more common in industry. It is an important solvent and medium for dyes, synthetic fibers, antifreeze, etc., and can also be used to prepare organic compounds such as acetate and acetate.

sum up, glacial acetic acid and acetic acid, although there are differences in chemical structure and properties, but have their own applications. Acetic acid is more used in food and cosmetics, while glacial acetic acid is more widely used in industrial fields. Whether in daily life or in industrial production, it is valuable to understand the difference and application of these two organic acids.

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