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Sodium benzoate is a widely used preservative in the cosmetics and personal care industries, known for its ability to inhibit the growth of bacteria, yeast, and fungi. It is a sodium salt of benzoic acid, typically produced through the neutralization of benzoic acid with sodium hydroxide. This compound is soluble in water and is often used in formulations to extend shelf life and maintain product integrity.
| Chemical formula | C7H5NaO2 |
| Appearance | White crystalline powder |
| Solubility | Soluble in water |
| pH range | 6 to 8 |
| Melting point | Approximately 300 °C |
When selecting sodium benzoate, consider the intended application and required purity levels. Specify the desired quantity, as bulk orders may be available at discounted rates. Additionally, inquire about certifications such as food-grade or cosmetic-grade standards, depending on your use case, and any specific tolerances needed for your formulation.
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Yes, sodium benzoate is generally recognized as safe for use in cosmetics and personal care products within specified limits.
It effectively prevents microbial growth, extends shelf life, and is generally non-toxic at recommended concentrations.
Yes, sodium benzoate is commonly used as a food preservative in various products.
Typically, the maximum concentration allowed is 0.5% in cosmetic formulations.
In rare cases, it may cause skin irritation or allergic reactions in sensitive individuals.
It should be stored in a cool, dry place, away from direct sunlight and moisture.