Sodium benzoate (sodium benzoic) is a white granule or crystal powder, odorless or slightly smelling of benzoin, slightly sweet and astringent. It is stable in the air and easily soluble in water. The pH value of its aqueous solution is 8 and it is soluble in ethanol. Benzoic acid and its salts are broad-spectrum antimicrobial agents, but their antibacterial effectiveness depends on the pH value of the food. As the acidity of the medium increases, its bactericidal and bacteriostatic effects increase, but in alkaline media, the bactericidal and bacteriostatic effects are lost.
Application
Sodium benzoate is a preservative used for oral liquid medicines. It has the effect of preventing deterioration and acidification and extending the shelf life. Excessive dosage can cause harm to the human liver and even cause cancer. The main applications are as follows:
1. Mainly used as food preservative, also used in pharmaceuticals, dyes, etc.
2. Used in the pharmaceutical industry and plant genetic research, and also used as dye intermediates, fungicides and preservatives.
3. Preservatives; antimicrobial agents.
4. Sodium benzoate is also an important acid-type food preservative. Converts to the effective form benzoic acid when used. For the scope and dosage of use, please refer to benzoic acid. In addition, it can also be used as a preservative for feed.
5. This product is used as a food additive (preservative), a bactericide in the pharmaceutical industry, a mordant in the dye industry, a plasticizer in the plastics industry, and an intermediate in organic synthesis such as spices.
6. Used as co-solvent for serum bilirubin test, food additive (preservative), bactericide in the pharmaceutical industry, mordant in the dye industry, plasticizer in the plastic industry, and also used in organic synthesis such as spices. intermediate.
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