Sodium Benzoate is a widely used organic acid salt preservative and functional additive, recognized for its broad-spectrum antimicrobial efficacy, safety, and cost-effectiveness. Its antimicrobial activity is highly dependent on pH, demonstrating optimal performance in acidic environments. While traditionally a cornerstone of food preservation, its applications have significantly expanded into pharmaceuticals, industrial fluids, and advanced material science. Production typically involves the neutralization of benzoic acid with sodium hydroxide or sodium carbonate, followed by crystallization and purification.

❋ Aliases: Benzoic Acid, Sodium Salt
❋ English Name: Sodium Benzoate
❋ Chemical Formula: C₇H₅NaO₂
❋ Molecular Weight: 144.11
❋ CAS Number: 532-32-1

Key Properties: Effective antimicrobial preservative (against yeast, mold, some bacteria), pH-dependent activity (optimal below pH 4.5), highly water-soluble, low toxicity profile.

Advanced Application Scenarios

1. "Guardian of Freshness and Safety" in Food & Beverage

• Primarily used as a preservative in acidic beverages (carbonated soft drinks, fruit juices), condiments (vinegar, soy sauce), and high-acid foods (pickles, dressings) to inhibit microbial spoilage and extend shelf life.

• Functions synergistically with other preservation methods (e.g., pasteurization, potassium sorbate) to provide a multi-hurdle approach to food safety.

2. "Formulation Stabilizer and Protector" in Pharmaceuticals & Cosmetics

• Employed as an antimicrobial preservative in liquid dosage forms such as syrups, elixirs, and oral suspensions to prevent microbial contamination throughout their shelf life.

• Used in select cosmetic and personal care products (e.g., lotions, creams, mouthwashes) to ensure product integrity and user safety against microbial growth.

3. "Corrosion and Microbial Inhibitor" in Industrial Applications

• Acts as an effective corrosion inhibitor in automotive engine coolants and antifreeze formulations, protecting metal components.

• Serves as a biocide in water-based industrial fluids, including metalworking coolants, adhesives, and paper coatings, to prevent microbial degradation and spoilage.

4. "Emerging Functional Additive" in Material Science and Energy

• Investigated as a mild, environmentally friendly corrosion inhibitor for specific metal alloys in closed-loop systems.

• Studied as a component in electrolyte formulations for certain types of batteries and supercapacitors to enhance stability or performance.

• Used as a preservative in polymer emulsions and latex paints to provide in-can preservation.

Technological Breakthroughs and Sustainable Development

Production and Purity Enhancement

• Implementation of advanced crystallization control and multi-stage purification techniques (e.g., recrystallization, activated carbon treatment) ensures high-purity product with minimal impurities, meeting stringent pharmacopoeial (USP, Ph. Eur.) and food-grade (FCC) standards.

• Process optimization focuses on reducing energy consumption, improving yield, and minimizing waste generation.

Synergistic Formulation Science

• Ongoing research and development focus on creating optimized preservative blends combining sodium benzoate with other preservatives (e.g., potassium sorbate) or chelating agents (e.g., EDTA) to broaden the antimicrobial spectrum, overcome microbial resistance, and allow for lower usage levels.

Sustainability and Regulatory Compliance

• Sourcing of benzoic acid from both synthetic and natural origins (e.g., from gum benzoin) to cater to diverse market demands, including "natural" product segments.

• Full compliance with global regulatory standards (FDA, EFSA, JECFA) and thorough toxicological profiling support its safe use within established Acceptable Daily Intake (ADI) levels.

• Efforts are made to optimize packaging to reduce environmental impact and ensure product stability.

Quality, Safety, and Analytical Control

• Employment of advanced analytical methods (e.g., HPLC, GC) for precise quality control, ensuring batch-to-batch consistency and accurate quantification.

• Comprehensive safety assessments and adherence to Good Manufacturing Practices (GMP) guarantee product quality and safety for its intended uses.

Technical Advantages

Quality Specifications

• Assay (on dried basis): 99.0 - 100.5%

• Clarity and Color of Solution: Passes test

• Heavy Metals (as Pb): ≤ 10 ppm (meets typical food/pharma grade requirements)

• Acidity/Alkalinity: Passes test

Physical Characteristics

• Appearance: White, granular or crystalline powder, often odorless or with a faint, characteristic odor.

• Solubility: Freely soluble in water, sparingly soluble in ethanol (96%).

Application Support

• Provides detailed guidance on effective usage levels based on product pH, water activity, and target microorganisms.

• Offers technical data on compatibility with other formulation ingredients and potential interactions.

• Supports customers in navigating regulatory requirements for different markets and applications.

Why Choose Us?

✅ High-purity products, in compliance with international standards
✅ 30+ Years Chemical Manufacturing Experience
✅ Strict QC with Batch Traceability
✅ Global logistics, supporting sea and air transportation
✅ Technical support, providing customized solutions
✅ Factory direct supply, with strong price competitiveness