Crescent chemical long-term supply of citric acid is an important organic acid, also known as citric acid, colorless crystals, often containing part of crystalline water, odorless, very sour, soluble in water. The calcium salt in cold water than in hot water, readily soluble, this nature are commonly used to identify and isolate citrate. Crystallization control a suitable temperature to obtain anhydrous citric acid. Has many uses in industry, food industry, cosmetic industry.