Sodium Benzoate — E211 / CAS 532-32-1

Description

1. Product Overview

Sodium Benzoate (E211, CAS 532-32-1) is a high-performance food and industrial-grade preservative widely used to inhibit the growth of bacteria, yeast, and fungi in acidic environments. It is a sodium salt of benzoic acid, valued for its strong antimicrobial efficiency, stability, and cost-effectiveness in large-scale production systems.

It plays a critical role across food & beverage, pharmaceutical, cosmetic, and industrial formulations where product shelf-life extension and microbial control are essential. Its strategic importance lies in its global regulatory acceptance, high efficacy at low dosage levels, and compatibility with a broad range of formulations, making it a foundational ingredient in preservation systems worldwide.

2. Key Specifications & Technical Characteristics

• Chemical Name: Sodium Benzoate
• Molecular Formula: C₇H₅NaO₂
• CAS Number: 532-32-1
• E Number: E211 (food grade)
• Purity: ≥ 99.0% (industrial & food-grade variants available)
• Appearance: White crystalline powder or granular form
• Odor: Odorless or faint benzoin-like odor
• Solubility: Highly soluble in water
• pH (10% solution): 7.5 – 8.5
• Packaging Options: 25 kg bags (PP/PE lined), jumbo bags (500–1000 kg), customized industrial packaging
• Shelf Life: 24–36 months under cool, dry storage conditions

3. Core Industrial Applications

Sodium Benzoate is extensively used across multiple high-volume industrial sectors due to its broad-spectrum antimicrobial properties:

• Food & Beverage Industry: Preservation of acidic products such as soft drinks, fruit juices, sauces, pickles, and condiments.
• Pharmaceutical Industry: Stabilization of liquid syrups, oral suspensions, and topical formulations.
• Cosmetics & Personal Care: Prevention of microbial contamination in creams, lotions, shampoos, and wet wipes.
• Industrial Applications: Corrosion inhibition and stabilization in antifreeze formulations and aqueous systems.

Its performance advantage lies in its high effectiveness at low concentration levels, excellent water solubility, and compatibility with acidic pH systems where many alternative preservatives lose efficacy.

4. Competitive Advantages

• Consistent High Purity: Manufactured under strict quality control ensuring batch-to-batch uniformity
• Global Regulatory Acceptance: Widely approved for food and pharmaceutical applications (E211 compliant)
• Supply Chain Reliability: Scalable production capacity for bulk and long-term contracts
• Cost Efficiency: Low dosage requirement reduces overall formulation cost
• Formulation Flexibility: Compatible with a wide range of aqueous and acidic systems
• Technical Documentation Support: COA, MSDS, and regulatory documentation available for compliance assurance
• Sustainable Production Practices: Optimized manufacturing processes reducing environmental footprint

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 1 Metric Ton (MT)
• Bulk Supply Capacity: Up to 20 MT per container shipment (depending on packaging configuration)
• Delivery Terms: FOB / CIF / EXW available upon request
• Lead Time: Typically 7–21 days depending on order volume and destination
• Export Capability: Global shipping with full documentation support for customs clearance