Sodium citrate, also known as sodium citrate, is an organic compound with the chemical formula C2hNnaOO₇·2HOO (dihydrate) and a relative molecular weight of 294.10.Sodium citrate is odorless, salty and slightly bitter. The substance is colorless transparent crystals or white granular and crystalline powders. Common forms include crystallized and powdered.It is soluble in water, slightly soluble in ethanol, insoluble in ether, the aqueous solution is weakly alkaline, and the pH value is about 8.0.It is stable in the air. When heated to 150℃, it loses its crystalline water and becomes anhydrous sodium citrate. If it continues to be heated, it will decompose. It needs to be sealed and stored in a cool and dry place to avoid moisture agglomeration.It is used in industrial production to manufacture food additives, pharmaceutical preparations, detergents, electroplating additives, chelating agents, buffers, emulsifiers, preservatives, and is also used in water treatment, printing and dyeing, cosmetics, food preservation and other processes.Its mild alkalinity and excellent chelating properties can adjust the flavor and stabilize the color in the food field. It can be used for metal ion chelation and wastewater treatment in the industrial field. At the same time, it can be used as a buffer reagent in chemical experiments. It is widely used.

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Application Description

1. It is used as an acidity regulator, chelating agent, preservative and emulsifier in the food industry. It is used in the processing of beverages, fruit juices, jams, confectionery, dairy products, meat processing, canned food and other products. It can adjust the pH value of food, improve flavor, stabilize food color, prevent deterioration caused by metal ions, and extend shelf life.
2. The pharmaceutical industry is used in the production of pharmaceutical preparations, used as anticoagulants, buffers, and flavoring agents, for the prevention and treatment of hypertension, myocardial infarction and other diseases, and can be used as an intermediate in drug synthesis for the preparation of antibiotics, vitamins and other drugs. It can also be used for anticoagulant treatment of blood products.
3. It is used as a chelating agent, cleaning agent, and buffer in the chemical industry. It is used for metal surface treatment and scale removal. It can efficiently chelate calcium, magnesium, iron and other metal ions to dissolve the scale on the inner wall of the equipment. At the same time, it is used in the electroplating process to adjust the pH value of the plating solution and improve the uniformity and adhesion of the coating.
4. It is used as a water quality softener and chelating agent in the field of water treatment. It can remove heavy metal ions and hardness ions from the water, soften the water quality and prevent scale formation. At the same time, it is used for pH regulation and heavy metal ion removal in wastewater treatment to reduce the content of pollutants in the water and improve water quality.
5. The cosmetics industry is used in the production of skin care products, shampoo, shower gel, toothpaste and other products. It is used as a pH regulator, chelating agent, and moisturizer. It can adjust the pH value of cosmetics, fit the acid-base environment of human skin, and chelate metal ions to prevent product oxidation and deterioration and enhance product stability.
6. It is used as a dyeing aid, color fixing agent, and water softener in the textile printing and dyeing industry. It is used in the dyeing process of cotton, linen, chemical fiber and other textiles. It can soften the dyeing water, promote the uniform coloring of dyes, and improve the dyeing fastness. At the same time, it is used in the post-bleaching neutralization treatment of textiles to improve the feel of the fabric.
7. It is used in the production of detergents, toothpaste, papermaking, etc. in the light industry. It is used as a lotion in the detergent industry to enhance the decontamination ability and prevent scale residues. It is used as a gluing agent in the paper industry to improve the strength and water resistance of the paper and improve the gloss of the paper.
8. It is used as a chemical reagent in the laboratory, as a buffer and chelating agent, for chemical analysis, organic synthesis, biological experiments and other operations, can also be used to calibrate pH meters, prepare standard buffer solutions, and can also be used for anticoagulant treatment of biological samples.