Sodium benzoate

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[ Introduction ]
Sodium benzoate is the sodium salt of benzoic acid, widely used as a preservative in food, beverages, cosmetics, and pharmaceuticals. It inhibits the growth of bacteria, yeast, and fungi, particularly in acidic environments.

[ Uses ]
- Preservative in acidic foods and drinks such as soft drinks, juices, sauces, and pickles
- Antimicrobial agent in cosmetics and personal care products
- Pharmaceutical excipient to enhance product shelf life
- Used in laboratory research and chemical manufacturing as a preservative or intermediate

[ Specifications ]
Appearance: White crystalline powder or granules
CAS Number: 532-32-1
Molecular Formula: C₇H₅NaO₂
pH Value: Typically 7–8 in a 1% aqueous solution
Solubility: Highly soluble in water (~556 g/L at 20 °C), slightly soluble in alcohol
Ingredient: Sodium benzoate (≥ 99% purity for food/pharma grade)
Storage: Store in a cool, dry place, tightly sealed to avoid moisture absorption