Acide benzoique
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Acide benzoique

Benzoic acid has the effect of sterilizing and inhibiting the growth of bacteria, and is low-toxic and tasteless, so it is widely used as a preservative.



Benzoic acid used as preservatives in food and drinks to prevent the growth of mold, yeast and fungi. In general the salts are preferred over the acid form because they are more soluble in water. The optimal pH for the antimicrobial activity is below pH 6.5 and sorbates are generally used at concentrations of 0.025% to 0.10%. Adding sorbate salts to food will however raise the pH of the food slightly so the pH may need to be adjusted to assure safety.

ProduitSpécificationRésultat du test
AspectColorless crystals or white crystalline powderConformes
Contenu99% min99.58 %
Point de fusion121-124 ℃123.0 ℃
Sulfate Ash0.1% Max0.08 %
Perte au séchage0.5% Max0.16 %
Carbonizable substanceY5Y5
Métaux lourds10ppm max7ppm
Chlorure200ppm max150ppm max
Résidu à l'allumage0.1% max0.07% max

Fonctions et applications

In the food industry, benzoic acid and sodium benzoate can be used as preservatives for soy sauce, pickles, apple cider, fruit juice, feed, etc. In drugs, cosmetics, toothpaste, fragrant powder, tobacco leaves, etc., benzoic acid and sodium benzoate are also used as preservatives.

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