What is the use of trisodium citrate? How was it prepared? CAS NO.6132-04-3

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Trisodium citrate, also known as sodium citrate, is an organic compound with white to colorless crystal appearance. Odorless, cool, salty and spicy. It is stable in normal temperature and air, slightly soluble in wet air, and weathered in hot air. When heated to 150 ℃, crystal water is lost. It is easily soluble in water, glycerin, alcohol and other organic solvents, and decomposes over heat. It is slightly deliquescent in humid environment and slightly weathered in hot air. The pH value of the solution is about 8.

Trisodium citrate has very good solubility, and the solubility increases with the increase of water temperature. Trisodium citrate is a weak acid and strong alkali salt, which can form a strong pH buffer with citric acid. What are the uses of trisodium citrate

Use of trisodium citrate:

1. In food, it is used as pH regulator and emulsion enhancer. It is mostly used in jam, candy, jelly, etc. and it can alleviate the sour taste with citric acid. However, because citric acid is always a chemical material, it is required to use an appropriate amount in production.

2. In industry, trisodium citrate can promote the biodegradation and dispersion ability of organisms. Trisodium citrate can also be used as a washing agent and widely used in washing powder to promote the discharge of sewage into rivers, alleviate water pollution and promote the rapid reproduction of algae.

3. In medicine, trisodium citrate is mainly used as anticoagulant and blood transfusion, prolonging the storage life of blood products, correcting the acidity of urine, multivalent complexing agent and multivalent chelating agent for removing trace metals.

4. As a preservative, trisodium citrate has the effect of preserving syrup. When using it, follow the doctor's advice.

These are some uses of trisodium citrate, which is widely used in food, industry, medicine and other fields. And the main component of trisodium citrate is citric acid, and citric acid is a natural component, which will not do harm to the body.

So how is trisodium citrate prepared

The synthesis method of trisodium citrate is obtained by hydrogen oxidation of citric acid or neutralization of sodium bicarbonate. Dissolve sodium bicarbonate in water under stirring and heating, add citric acid, continue heating to 85 ~ 90 ℃, and adjust pH to 6.8 Add activated carbon for decolorization and filter while hot. The filtrate is concentrated under reduced pressure, crystallized after cooling, filtered, washed and dried to obtain trisodium citrate.

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