Benzoic acid

Benzoic acid

Benzoic acid /bɛnˈzoʊ.ɪk/, C7H6O2 (or C6H5COOH), is a colorless crystalline solid and a simple aromatic carboxylic acid. The name is derived from gum benzoin, which was for a long time its only known source.

Introduction

Benzoic acid /bɛnˈzoʊ.ɪk/, C7H6O2 (or C6H5COOH), is a colorless crystalline solid and a simple aromatic carboxylic acid. The name is derived from gum benzoin, which was for a long time its only known source. Benzoic acid occurs naturally in many plants and serves as an intermediate in the biosynthesis of many secondary metabolites. Salts of benzoic acid are used as food preservatives and benzoic acid is an important precursor for the industrial synthesis of many other organic substances. The salts and esters of benzoic acid are known as benzoates.

Functions and Applications

Product NameBenzoic acid
IntroductionBenzoic 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.
AppearanceWhite Crystalline Powder
Package25kgs/bag or 25kgs/drum


Item SpecificationTest result
AppearanceColorless crystals or white crystalline powderConforms
Content 99%min99.58%
Melting Point121-124℃123.0℃
Sulfate Ash0.1%Max0.08%
Loss on drying0.5%Max0.16%
Carbonizable substance Y5Y5
Heavy metals 10ppm max7ppm
Chloride 200ppm max150ppm max
Residue on ignition0.1%max0.07%max



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