Key Properties of Sodium Benzoate
| Parameter | Details |
|---|---|
| Product Name | Sodium Benzoate |
| Synonyms | Benzoic Acid Sodium Salt, Sodium Salt of Benzoic Acid |
| CAS No. | 532-32-1 |
| Grade | IP / BP / USP / EP / FCC |
| Appearance | White crystalline powder or granules |
| Molar Mass | 144.11 g/mol |
| Solubility | Freely soluble in water; slightly soluble in ethanol (96%) |
Inquiry
WhatsappManufacturing process of Sodium Benzoate
Sodium Benzoate is manufactured through a controlled neutralization process to ensure high purity, consistent quality, and compliance with pharmaceutical and food-grade standards.
Step 1: Raw Material Selection
High-quality benzoic acid and sodium hydroxide are carefully selected and tested to ensure they meet the required quality specifications.
Step 2: Preparation of Solution
Benzoic acid is dissolved in purified water under controlled conditions. A sodium hydroxide solution is prepared separately.
Step 3: Neutralization Reaction
The sodium hydroxide solution is gradually added to the benzoic acid solution under continuous stirring. The reaction is carried out under controlled temperature and pH conditions to ensure complete conversion into Sodium Benzoate.
Step 4: Purification
The reaction mixture is purified to remove any unreacted materials and process-related impurities, resulting in a high-purity solution.
Step 5: Concentration
The purified solution is concentrated by controlled evaporation to achieve the desired concentration for crystal formation.
Step 6: Crystallization
The concentrated solution is cooled under controlled conditions, allowing Sodium Benzoate crystals to form with the required purity and particle size.
Step 7: Filtration
The Sodium Benzoate crystals are separated from the mother liquor using suitable filtration equipment and washed to remove residual impurities.
Step 8: Drying
The filtered crystals are dried under controlled temperature conditions until the required moisture content is achieved. The dried product is then ready for milling, quality testing, and packaging.
Applications of Sodium Benzoate
Technical Specifications of Sodium Benzoate
| Sr. No. | Test | Specification |
|---|---|---|
| 1 | Description | White crystalline powder or granules |
| 2 | Identification | Complies with the test for Sodium and Benzoate |
| 3 | Assay | 99.0% – 100.5% (on dried basis) |
| 4 | Loss on Drying | Not more than 1.5% |
| 5 | pH (5% Solution) | 7.5 – 8.5 |
| 6 | Solubility | Freely soluble in water; slightly soluble in ethanol (96%) |
| 7 | Chloride (Cl⁻) | Not more than 200 ppm |
| 8 | Sulphate (SO₄²⁻) | Not more than 300 ppm |
| 9 | Heavy Metals | Not more than 10 ppm |
| 10 | Iron (Fe) | Not more than 10 ppm |
| 11 | Lead (Pb) | Not more than 2 ppm |
| 12 | Arsenic (As) | Not more than 2 ppm |
| 13 | Residue on Ignition | Not more than 0.1% |
Packing and Storage condition of Sodium Benzoate
Packing:
Packed in 25 kg / 50 kg HDPE bags with inner liner.
Available in fiber drums or customized packaging as per customer requirements.
Tamper-proof and moisture-resistant packaging ensures product stability.
Storage:
Store in a cool, dry, and well-ventilated area away from moisture.
Keep the container tightly closed to prevent contamination.
Avoid exposure to direct sunlight and incompatible materials (such as strong acids).
Recommended storage temperature: Below 30°C.
MSDS - Sodium Benzoate
Why Choose Chemignition for
Sodium Benzoate Supply?
Quality Assurance
Grade Compliance
Sodium Benzoate is manufactured in adherence to stringent global pharmaceutical standards.
In-House Quality Control
Each batch undergoes rigorous testing for purity, stability, and efficacy.
Regulatory Approvals
Certified for export and compliant with international regulatory requirements.
Large-Scale Manufacturing and Export
Grade Compliance
Sodium Benzoate is manufactured in adherence to stringent global pharmaceutical standards.
In-House Quality Control
Each batch undergoes rigorous testing for purity, stability, and efficacy.
Regulatory Approvals
Certified for export and compliant with international regulatory requirements.
