Product Overview

Sodium Metabisulfite (Na₂S₂O₅) – Food Grade is a high-purity, food-safe sulfite compound widely used as a preservative, antioxidant, and sanitizing agent in food, beverage, and pharmaceutical applications. Known for its strong reducing properties and ability to release sulfur dioxide (SO₂) upon hydrolysis, this compound plays a vital role in preventing spoilage, discoloration, and microbial growth across a broad range of food processing systems.

Our food-grade sodium metabisulfite is produced under strict quality control protocols to meet food safety standards for human consumption. With a finely controlled particle size and low contaminant profile, it is ideally suited for both direct and indirect food contact applications. Its consistent reactivity and solubility ensure uniform performance in formulation, processing, and sanitation workflows.

Key Properties

• Chemical Formula: Na₂S₂O₅

• Molecular Weight: 190.10 g/mol

• Melting Point: ~150°C (302°F, decomposes)

• Solubility: Readily soluble in water

• Appearance: White to pale yellow crystalline powder

• Odor: Slight sulfur dioxide-like odor

• Stability: Stable under dry, sealed storage conditions

• SO₂ Release Potential: Approximately 67% by weight

• Food Grade Compliance: Meets FCC and food additive standards (21 CFR 182.3766)

Common Applications

• Food Preservation and Color Stabilization:
  Used in dried fruits, wines, and juices to prevent enzymatic browning and microbial spoilage by releasing controlled amounts of SO₂, which acts as a preservative and antioxidant.

• Wine and Beverage Processing:
  Acts as a microbial inhibitor and antioxidant in winemaking and juice production, helping to stabilize flavor and extend shelf life without affecting organoleptic properties.

• Starch and Potato Processing:
  Used to inhibit enzymatic browning during peeling and slicing, preserving color and texture in potato, apple, and starch-based products.

• Sanitization Agent:
  Applied in clean-in-place (CIP) and surface sanitization procedures for food processing equipment, neutralizing chlorine residues and preventing contamination.

• Pharmaceutical and Nutraceutical Applications:
  Functions as a stabilizer and antioxidant in select pharmaceutical formulations where controlled SO₂ release prevents degradation of active ingredients.

Safety Precautions

While sodium metabisulfite is approved for food use, it must be handled with care to avoid overexposure. Inhalation of dust or vapors (especially SO₂) may cause irritation or allergic reactions in sensitive individuals, particularly those with sulfite sensitivities or asthma.

Use appropriate protective equipment during bulk handling, including gloves, goggles, and dust protection. Ensure adequate ventilation when dissolving or mixing to prevent SO₂ buildup in enclosed areas.

Follow label dosage limits and local regulations regarding maximum allowable concentrations in finished food products. Store in cool, dry conditions, sealed tightly to avoid exposure to moisture and air.

Benefits

Our Food Grade Sodium Metabisulfite delivers exceptional purity, safety, and functional reliability for food and beverage applications. Each batch is manufactured to comply with FCC and FDA standards, ensuring consistent SO₂ release, low impurity levels, and excellent solubility.

This product supports color retention, microbial control, and oxidative stability across a range of food and beverage systems while meeting the strict demands of commercial food safety protocols. With a long shelf life and dependable batch-to-batch performance, our sodium metabisulfite is a trusted ingredient in industrial-scale food preservation and processing operations.