| CAS No.: | 5949-29-1 |
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| Formula: | 5949-29-1 |
| EINECS: | 5949-29-1 |
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Citric Acid, also known as citric acid, is an important organic weak acid with the molecular formula C6H8O7, has the appearance of colorless crystals, is odorless, and is readily soluble in water, with solutions showing acidity. In biochemistry, citric acid is an intermediate in the citric acid cycle (tricarboxylic acid cycle), a cycle that occurs in the metabolism of all aerobic organisms. Citric acid has a wide range of applications in industry, the food industry and the cosmetic industry. In the food industry, citric acid is commonly used as an acidity regulator, flavoring agent and chelating agent, and is widely used in beverages, confectionery, canned foods and other foods. In addition, citric acid has many functions such as solubilizer, buffer, antioxidant, deodorizer and deodorizer, which can be used to improve the flavor and texture of food. The physical properties of citric acid include its colorless translucent crystals or white granules or white crystalline powder at room temperature, odorless, very acidic taste, and slightly deliquescent in moist air. It can exist in the form of anhydrous or monohydrate, anhydrous when crystallized from hot water, monohydrate when crystallized in cold water, and monohydrate decomposes to give anhydrous when heated to 78°C. The chemical properties of citric acid show it to be a tricarboxylic acid, which decomposes on heating to 175° C. to produce carbon dioxide and water, leaving some white crystals. It is a strong organic acid with 3 H+ to ionize, and when heated it decomposes into a variety of products that react with acids, bases, and glycerol. |
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| In the food industry, citric acid is often used as a flavoring agent to increase the acidity and improve the taste of food. For example, the addition of citric acid to the preparation of foods such as candies, cookies, breads, jams, beverages, and canned foods can make the food taste better and promote appetite. In addition, citric acid is used as a preservative that inhibits bacterial growth and improves the color stability of foods, thereby extending their shelf life. Citric acid also plays an important role in the cosmetics industry. It acts as a mild cleanser, helping to remove dirt and oil from the surface of the skin, leaving it refined and smooth. In addition, citric acid softens the stratum corneum to some extent and improves skin roughness. In addition to the food and cosmetic industries, citric acid has a wide range of applications in other fields. For example, in cellulose production, citric acid can be used to make biodegradable materials, which has important environmental applications. In addition, citric acid is used in the production of liquid fertilizers, as it can form a protective layer on plant roots, preventing the invasion of pathogens and promoting plant growth and development. |
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