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.

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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 Name	Benzoic acid
Introduction	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.
Appearance	White Crystalline Powder
Package	25kgs/bag or 25kgs/drum

Item	Specification	Test result
Appearance	Colorless crystals or white crystalline powder	Conforms
Content	99%min	99.58%
Melting Point	121-124℃	123.0℃
Sulfate Ash	0.1%Max	0.08%
Loss on drying	0.5%Max	0.16%
Carbonizable substance	Y5	Y5
Heavy metals	10ppm max	7ppm
Chloride	200ppm max	150ppm max
Residue on ignition	0.1%max	0.07%max

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