Sodium Benzoate
CAS: 532-32-1
Category: Organic Intermediates
| Purity | Food Grade ≥99.0%, Pharmaceutical Grade ≥99.0%, Industrial Grade ≥98.0% |
| Molecular Formula | C7H5NaO2 |
| Molecular Weight | 144.11 |
| Appearance | White crystalline powder or granules, odorless or with a slight characteristic odor, with a sweet and astringent taste |
| Packaging | 25 kg kraft paper bags with PE inner liner, 500 kg or 1000 kg polypropylene woven bags (jumbo bags), or customized packaging according to customer requirements |
| Testing Indicators | Appearance — Visual inspection; Identification — Infrared spectroscopy (FTIR) and sodium ion reaction test; Assay/Purity — Acid-base titration or HPLC according to USP-NF/FCC methods; Loss on drying — Gravimetric method (105°C drying); Heavy metals — ICP-MS or colorimetric method; Chloride content — Argentometric titration; pH value — Potentiometric measurement of aqueous solution; Benzoic acid content — HPLC analysis; Microbial limits — Plate count method for food and pharmaceutical grades. |
| Storage Notes | Store in a cool, dry, and well-ventilated area. Keep containers tightly sealed and protected from moisture, heat, and direct sunlight. Avoid storage near strong acids and strong oxidizing agents. Use clean, dry equipment when handling to prevent contamination. |
| Lead Time | 10 days |
Sodium benzoate is the sodium salt of benzoic acid and is widely used as a preservative in food, beverages, cosmetics, and pharmaceutical formulations. It inhibits the growth of bacteria, yeast, and fungi, especially in acidic environments. It is also used as a corrosion inhibitor, an intermediate in chemical synthesis, and a stabilizer in various industrial applications.