Sodium benzoate
Sodium benzoate is a food preservative commonly used in China’s food industry at present, odorless or microstrip benzoin smell, with sweet astringent taste. Stable in the air, exposed to the air can absorb moisture. Found naturally in blueberries, apples, plums, cranberries, cranberries, prunes, cinnamon and cloves, its bactericidal properties are weaker than benzoic acid.
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Description
Product Name: Sodium benzoate
Molecular formula: C7H5NaO2
Appearance: White particles or crystal powder.
CAS NO.: 532-32-1
EINECS NO.: 208-534-8
Application
Sodium benzoate can be 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 also as an intermediate in organic synthesis such as spices.
Mechanism of anticorrosion
Benzoic acid preservatives are based on their undissociated molecules. The undissociated benzoic acid is highly oleophilic and easy to enter the cell membrane through the cell membrane, interfering with the permeability of the cell membrane of microorganisms such as molds and bacteria, preventing the absorption of amino acids by the cell membrane, entering the benzoic acid molecules into the cell, acidifying the alkali storage in the cell, and inhibiting the activity of respiratory enzyme system in the cell of microorganisms. Thus, it plays an antiseptic role. Benzoic acid is a broad-spectrum antimicrobial agent, which has a good effect on yeast, mold and some bacteria, and has an inhibitory effect on various bacteria within the permitted maximum range of use, at a pH value below 4.5.
