Citric acid, also known as citric acid, is a colorless, crystalline organic compound from carboxylic acids. Its formula is C₆H₈O₇. It is found in almost all plants and bodily fluids of many animals. Citric acid (English citric acid) is used in metal cleaning works, to increase the durability of foods and various organic substances, and to flavor some soft drinks. It is also used in the manufacture of confectionery and medicine. It is especially found in citrus fruits in large quantities. The code name among the guards is E 330.
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