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Name:ácido benzoico

Synonyms:Benzenecarboxylic acid; Benzeneformic acid; Benzenemethonic acid; Carboxybenzene; Oracylic acid; phenyl carboxylic acid; Phenylformic acid

Molecular Structure: 

Molecular Formula:C7H6O2

Molecular Weight:122.12

CAS Registry Number:65-85-0



Benzoic acid, C7H6O2 (or C6H5COOH), is a colorless crystalline solid and the simplest aromatic carboxylic acid. The name derived from gum benzoin, which was for a long time the only source for benzoic acid. This weak acid and its salts are used as a food preservative. Benzoic acid is an important precursor for the synthesis of many other organic substances.
Benzoic acid and its salts are used as a food preservative, represented by the E-numbers E210, E211, E212, and E213. Benzoic acid inhibits the growth of mold, yeast and some bacteria. It is either added directly or created from reactions with its sodium, potassium, or calcium salt. The mechanism starts with the absorption of benzoic acid in to the cell. If the intracellular pH changes to 5 or lower, the anaerobic fermentation of glucose through phosphofructokinase is decreased by 95%. The efficacy of benzoic acid and benzoate is thus dependent on the pH of the food. Acidic food and beverage like fruit juice (citric acid), sparkling drinks (carbon dioxide), soft drinks (phosphoric acid), pickles (vinegar) or other acidified food are preserved with benzoic acid and benzoates.
Typical levels of use for benzoic acid as a preservative in food are between 0.05 – 0.1%. Foods in which benzoic acid may be used and maximum levels for its application are laid down in international food law.

Items Specifications
Assay 99.50 % Min.
Oxidizable substances Meets the requirements
Carbonizable substances Meets the requirements
Heavy metals 10 ppm Max.
Melting point 121 ~ 123℃
Chloride 0.014 % Max.
Arsenic 2 ppm Max.
Phthalate Meets the requirements
Loss on drying 0.5 % Max.

Packing:in plastic internal bag and external knitted or paper-made bag with a net weight of 25kj/bag.

Storage:keep in a cool,dry and ventilated place.Acoid flame.



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