Trisodium citrate is not the same as citric acid.
1. Chemical Composition
Citric acid is a weak organic acid with the chemical formula C₆H₈O₇. It occurs naturally in citrus fruits and many other fruits.
Trisodium citrate has the chemical formula Na₃C₆H₅O₇. It is the sodium salt of citric acid. It is sometimes referred to simply as "sodium citrate", though sodium citrate can refer to any of the three sodium salts of citric acid. It possesses a saline, mildly tart flavor, and is a mild alkali.
2. Properties
Citric acid is acidic in nature and has a sour taste. It is often used as a flavoring agent and food preservative due to its acidic properties.
Trisodium citrate is a salt and is alkaline when dissolved in water. It is commonly used as a buffering agent, emulsifier, and sequestering agent.
3. Uses
Citric acid is used in a wide range of applications including food and beverage industry (for flavoring, acidity adjustment, and preservation), cleaning products (as a descaling agent), and cosmetics.
Trisodium citrate is mainly used in the food industry for purposes such as adjusting pH, stabilizing emulsions, and preventing the formation of unwanted precipitates. It is also used in some pharmaceuticals and in the production of detergents.
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