INTRODUCTION
Potassium benzoate (E212), the potassium salt of benzoic acid, is a food preservative used to prevent the growth of mold, yeast and some bacteria. It works best in low-pH products, below 4.5, where it exists as benzoic acid.
MANUFACTURE
Potassium benzoate is produced by oxidizing toluene to benzoic acid followed by a neutralization with potassium hydroxide.
| Synonyms | Benzoic acid potassium salt |
| CAS no. | 582-25-2 |
| EINECS no. | 209-481-3 |
| Molecular formula | C7H5KO2 |
| Molecular weight | 160.22 |
| Structure |  |
APPLICATIONS
| Potassium Benzoate is used as a preservative in many packaged food products, cosmetics, fireworks, personal care products (i.e. shampoos, conditioners, facial cleansers, and moisturizers) and more. |
| Also, used as a processing aid or additive (preservative, pH regulating agent, stabilizer) in the production of various commercial and industrial products, including plastics, pulp and paper products, water treatment products, coatings, inks and toners. |
SPECIFICATIONS
| Test | Unit | Specification |
|---|---|---|
| Description | – | White granules, crystalline powder, or flakes |
| Solubility | – | One g dissolves in 2 ml of water, in 75 ml of alcohol, and in 50 ml of 90% alcohol |
| Identification | ||
| A. Assay | – | Complies |
| B. IR | – | Complies |
| C. Positive for Potassium | – | Complies |
| Alkalinity as KOH | % | Max 0.06 |
| Lead | mg/kg | Max 2.0 |
| Water | % | Max 1.5 |
| Purity (calculated on anhydrous basis) | % | 99.0 – 101.0 |
PACKING
25 kg / 50 kg Fiber drum
STORAGE
Store in airtight container in a cool, dry place
CERTIFICATIONS
cGMP & KOSHER
REACH status
Not registered
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