Potassium benzoate is a synthetic chemical preservative. It stops mold, yeast, and bacteria from growing in packaged goods. It extends the shelf life of acidic products like fruit juices, sodas, and salad dressings. It is designated as the E-number E212 in the European Union.
Here are the main ways it is used:
- Food and Beverages: It is heavily used in acidic foods. Common examples include carbonated soft drinks, fruit juices, pickles, jams, and condiments. It works best when the product’s pH is below 4.5.
- Cosmetics: It acts as an antimicrobial agent in skin and hair care products, including shampoos and moisturizers. Formulators prefer it over sodium benzoate when they want to avoid adding extra sodium to a recipe.
- Medicine: It is used as a lubricant and preservative in some pill and liquid formulations.
Potassium Benzoate
Potassium Benzoate quick Details
Chemical Name: Potassium Benzoate
CAS No.: 582-25-2
Molecular Formula: C7H5KO2
Potassium Benzoate Structure:
Molecular weight: 160.21
Appearance: white powder
Assay: 99%
Potassium Benzoatetypical Properties
| Tests | Specification |
| Appearance | White powder |
| Content | ≥99% |
| Loss on dryingt | ≤2.0% |
| Hazen | ≤20 |
| Appearance ofsolution | Pass |
| Acidity andalkalinity | Pass |
| Readily oxidizablesubstance | Pass |
| Heavy metal | ≤0.001% |
| Arsenic | ≤0.0002% |
| Sulfate | ≤0.1% |
| Chloride | ≤0.03% |
| Phthalandione | Pass |
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