Sodium Benzoate: A Versatile and Essential Preservative
Major Application Fields
The main applications of sodium benzoate include its use as a preservative, pH regulator, and intermediate in organic synthesis. In the food industry, sodium benzoate is an efficient preservative that can effectively inhibit the growth of microorganisms and extend the shelf life of food. It is commonly added to beverages, sauces, jams, and other food products to ensure their safety and stability. For example, in fruit juices and carbonated drinks, sodium benzoate can prevent the growth of bacteria and mold, maintaining the quality and freshness of the products.
Pharmaceutical Industry
In the pharmaceutical industry, sodium benzoate is used to produce intermediates for certain drugs. It provides a carboxyl functional group that can participate in organic synthesis reactions to produce antibiotics, antipyretic analgesics, and other medications. Additionally, sodium benzoate can be used to regulate the pH of drug formulations, ensuring their stability and bioavailability. For example, in some liquid medications and topical ointments, sodium benzoate serves as a preservative to prevent microbial contamination and spoilage.
Cosmetic Industry
In the cosmetic industry, sodium benzoate is used to ensure the stability and safety of products. It is commonly added to shampoos, lotions, and facial creams to prevent spoilage and maintain product quality over time. Its preservative properties help protect against microbial contamination, ensuring the safety and effectiveness of these products.
Industrial Applications
In industrial applications, sodium benzoate is used as a corrosion inhibitor and as a buffering agent to regulate pH in certain chemical processes. Its ability to stabilize pH levels makes it a valuable component in industrial formulations. For example, in cooling systems and metalworking fluids, sodium benzoate helps prevent corrosion and maintains the integrity of the equipment.
Safety and Handling
Sodium benzoate is a relatively safe chemical, but precautions should be taken during use and storage. It should be stored in a sealed container to avoid moisture and contamination. Appropriate protective equipment, such as gloves and goggles, should be worn during handling to prevent contact with skin and eyes.
Specifications
| Product Name | Sodium Benzoate | |||||||||
| MF | C₇H₅NaO₂ | |||||||||
| Appearance | White crystal | |||||||||
| Molecular Weight | 144.11 | |||||||||
| CAS NO | 532-32-1 | |||||||||
| HS Code | 29163100 | |||||||||
| EINECS NO | 208-534-8 | |||||||||
| Application | Preservative in food, beverages, pharmaceuticals, cosmetics | |||||||||
Quality Control Sheet
| Product Name | |||||||
| ITEM | STANDARD | TEST RESULT | |||||
| Assay % | 99.0-100.5 | 99.94 | |||||
| Loss on drying / % | ≤2.0 | 0.46 | |||||
| Chloride / % | ≤0.02 | <0.02 | |||||
| Compound containing chlorine gas | ≤0.03 | <0.03 | |||||
| Heavy metals / % | ≤0.001 | <0.001 | |||||
| Arsenic / % | ≤0.0002 | <0.0002 | |||||
| Sulfate / % | ≤0.1 | <0.1 | |||||
In summary
In summary, sodium benzoate, as a versatile and essential preservative, plays a significant role in the food, pharmaceutical, cosmetic, and industrial sectors. It not only enhances the stability and safety of products but also supports the development of modern industry. With continuous technological advancements and increasing demand for efficient preservatives, the application prospects for sodium benzoate will remain strong.