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Potassium Benzoate

Potassium benzoate, the potassium salt of benzoic acid, is a food preservative that inhibits the growth of mold, yeast and some bacteria. It works best in low-pH products, below 4.5, where it exists as benzoic acid.
Acidic foods and beverages such as fruit juice (citric acid), sparkling drinks (carbonic acid), soft drinks (phosphoric acid), and pickles (vinegar) may be preserved with Potassium benzoate. It is approved for use in most countries including Canada, the U.S., and the EU, where it is designated by the E number E212. In the EU, it is not recommended for consumption by children.
Potassium benzoate is also used as the whistle in many fireworks.

Potassium benzoate

Product name: Potassium benzoate
Molecular formula: C7H5KO2.3H2O

Quality standard

Index name



99% min

Alkalinity(as KOH)

0.06% max


1.5% max


3mg/kg max

Heavy metals (as Pb)

10mg/kg max 

Characters: white crystal powder, and soluble in water and alcohol.
Implement standard: FAO/WHO,1994
Use: this product is the better food antiseptic and antineoplastic agent, and used in fruit, beverage and others.
Packing: 25kg weaving bag lined with polythene plastic or paper belt
Storage and transportation: this product is non-hazardous product. Pay attention to full package and prevent dampproof.

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