Citric acid is an important organic acid, also known as citric acid, colorless crystal, often contains a molecule of crystalline water, odorless, has a strong sour taste, easily soluble in water. Its calcium salts are more soluble in cold water than hot water, and this property is often used to identify and separate citric acid. Anhydrous citric acid can be obtained by controlling the appropriate temperature during crystallization. It has many uses in industry, food industry, makeup industry and so on.
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