Description
Potassium benzoate is a white, odorless, crystalline powder or a clear aqueous solution known for its excellent preservative and antimicrobial properties. As the potassium salt of benzoic acid, it serves primarily as a food-grade preservative and is often used in beverages, sauces, and low-sugar products to prevent the growth of bacteria, yeast, and mold.
Thanks to its high solubility and neutral taste, potassium benzoate offers an effective alternative to sodium benzoate in reduced-sodium formulations. It also plays a role in the pharmaceutical and cosmetic sectors, particularly where microbial control is essential.
This compound provides stability and shelf-life extension across various applications while maintaining safety and regulatory compliance.
Chemical Properties
Chemical Name: Potassium Benzoate
Synonyms: Benzoic acid potassium salt
Molecular Formula: C₇H₅KO₂
Molecular Weight: 160.21 g/mol
CAS Number: 582-25-2
EC Number: 209-481-3
Appearance: White crystalline powder or clear liquid
Odor: Odorless
Density (Solid): ~1.5 g/cm³
Solubility: Freely soluble in water
Melting Point: ~292°C
pH (1% solution): 7.5–8.5
Applications
Food Preservative: Widely used in carbonated drinks, fruit juices, sauces, and pickled products
Pharmaceutical Industry: Stabilizer and antimicrobial additive in liquid medicines
Cosmetics & Personal Care: Preservative in lotions, shampoos, and creams
Industrial Use: Microbial inhibitor in adhesives, coatings, and detergents
Industries of Use
Food and Beverage Industry:
Potassium benzoate functions as an E212 additive. It extends shelf life by inhibiting mold, yeast, and bacteria. It is especially useful in acidic products like soft drinks and vinegar-based sauces.
Pharmaceuticals:
Liquid medications, syrups, and oral rinses often contain potassium benzoate to maintain microbiological integrity over time.
Cosmetic and Hygiene Products:
Formulators use potassium benzoate in skin care and hygiene products to ensure preservation without altering fragrance or color.
Industrial Formulations:
Water-based coatings, cleaners, and adhesives include potassium benzoate as a microbial growth inhibitor, especially in closed-system applications.
Storage Conditions
Store in sealed containers away from moisture.
Keep in a cool, dry place.
Protect from direct sunlight and extreme temperatures.
Ensure the container remains tightly closed when not in use.
Packaging
20 L HDPE drum (liquid form)
200 L HDPE barrel (liquid form)
Labeled according to international transport and safety standards.
Safety & Handling
Avoid contact with eyes and skin.
Wear gloves and safety glasses during handling.
Do not inhale dust or vapors.
Dispose of in accordance with local environmental regulations.
