Sodium Benzoate
Benzoic Acid Sodium Salt
- CAS
- 532-32-1
- EC
- 208-534-8
- Food Code
- E211
- Sectors
- Food & Nutrition, Pharma & Healthcare, Personal Care & Cosmetics
Sodium Benzoate (CAS 532-32-1) is the sodium salt of benzoic acid, a white, odorless crystalline solid supplied as crystals, granules, flakes or powder, and it acts as a preservative against fungi in acidic conditions, serving carbonated drinks, sauces, antifungal syrups and lotions. Synthesized from toluene oxidation, it meets purity specs from industry preservatives and EFSA additive approvals.
Typical Properties
| Molecular formula | C7H6O2.Na |
|---|---|
| Molecular weight | 144.1 g/mol |
| Appearance | Sodium benzoate is a white crystalline solid. It is odorless and nonflammable |
| Form | Crystals, Granules, Flakes or Crystalline Powder |
| Color | White |
| Odor | odorless |
| Melting point | >300 °C |
| Density | 0.100552 g/cm³ @ Temp: 15 °C |
| Water solubility | soluble |
| Flash point | >100°C |
| pH | 7.0-8.5 (25°C, 1M in H2O) |
| GHS signal word | Warning · Irritant / harmful |
| HS code | 29163100 |
| Grades available | Food Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Sodium Benzoate
Applications
Preserves carbonated drinks and sauces; in pharma for antifungal syrups; in cosmetics for lotion stability; in animal feeds for mold control; and in industrial coolants for corrosion inhibition.
Safety & Risks
Forms benzene with ascorbic acid under heat; allergic reactions in sulfite-sensitive. Regulated ADI; avoid heated storage; use ventilation for dust.
Packaging
Supplied in 25 kg polyethylene-lined fiber drums with secure lids. Keep in benzoate light-shielded warehouses to maintain efficacy.