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Sodium benzoate is the sodium salt of benzoic acid. It is approved as a food additive with E 211 number. Sodium benzoate has a bacteriostatic and fungi-static. It is therefore as a food additive for the preservation of food (efficiency optimum at pH < 3.6) used. It is used in pyrotechnics as fuel, usually in connection with fire-promotional potassium perchlorate. In the synthesis of polypropylene, it serves as nucleating agents. It is used in medicine in combination with L-arginine hydrochloride as emergency medicine for the treatment of hyperammonemia.
Sodium Benzoate (C₇H₅NaO₂) is a white crystalline powder used in laboratories and many industries. It is the sodium salt of benzoic acid and belongs to one of the most stable and effective preservatives. Because it is safe and easy to handle, it is suitable for educational, industrial, and research purposes.
This compound is also known as food additive E211. It prevents the growth of bacteria, yeast, and mold. Therefore, it plays a key role in extending product shelf life, especially in acidic foods and beverages with a pH lower than 3.6.
| Property | Value |
|---|---|
| Chemical name | Sodium Benzoate |
| Formula | C₇H₅NaO₂ |
| CAS No. | 532-32-1 |
| Form | Crystalline powder |
| Color | White |
| Odor | Odorless |
| pH (1% sol., 25 °C) | ~7.5 |
| Solubility | Easily soluble in water |
| Melting point | 300 °C (decomposes) |
| Density | 1.44 g/cm³ |
| Stability | Stable under normal conditions |
Sodium Benzoate has many uses in science, medicine, and industry.
First of all, it acts as a preservative in foods, drinks, and pharmaceuticals. It slows down the development of microorganisms and helps maintain freshness.
In addition, scientists use it in pyrotechnics, where it serves as a fuel component. Combined with potassium perchlorate, it produces strong, colorful effects.
Moreover, in the chemical industry, it functions as a nucleating agent during polypropylene synthesis. This property improves the clarity and structure of the polymer.
Sodium Benzoate also appears in medical formulations, especially when mixed with L-arginine hydrochloride, where it supports emergency treatment of hyperammonemia.
Because of its versatility, this compound remains a standard ingredient in modern laboratory and industrial processes.
| Grade | Description |
|---|---|
| Pure p.a. (Pro analysi) | High-purity analytical reagent for precise laboratory work. |
| Pure | Reliable chemical quality for educational and research use. Not suitable for food. |
| Technical | Basic quality for school, craft, and agricultural projects. Not suitable for food. |
Store Sodium Benzoate in a cool, dry, and well-ventilated area.
Always keep the container tightly closed and away from sunlight.
When handling, wear protective gloves, goggles, and a dust mask.
Avoid contact with strong oxidizers. If the substance touches the skin or eyes, rinse with plenty of water immediately.
Also, dispose of waste according to local safety rules.
⚠️ FOR LABORATORY AND R&D USE ONLY
Not intended for food or pharmaceutical production.
💡 Sodium Benzoate E211 is a reliable, versatile, and stable reagent that supports many industries—from food technology to advanced laboratory research.
| Weight | 1.0 kg |
|---|
