Sodium Metabisulphite E223

Product Overview

Preservative | Antioxidant | Anti-Browning Agent | Processing Aid

Sodium Metabisulphite is a high-purity sulphite-based preservative and antioxidant widely used in the food and beverage industry to prevent oxidation, control microbial growth, and maintain colour and freshness. It appears as a white to slightly yellow crystalline powder, is highly soluble in water, and releases sulphur dioxide (SO₂) when dissolved, providing effective preservation and anti-browning performance.

This ingredient plays a critical role in wine and beverage processing, fruit and vegetable treatment, bakery applications, and packaged foods, helping manufacturers achieve consistent quality, extended shelf life, and stable visual appearance.

Key Properties

• Chemical Name: Sodium Metabisulphite
• Scientific Formula: Na₂S₂O₅
• E Number (Food Additive Code): E223
• Common Name: Sodium Pyrosulphite
• Industry Name: Food Preservative (Sulphite)
• Appearance: White to pale yellow crystalline powder
• Solubility: Freely soluble in water

Applications in Food & Beverage Production

Sodium Metabisulphite is widely used across commercial food and beverage manufacturing, including:

• Wine, Beer & Beverage Processing: Preservation and oxidation control
• Fruit & Vegetable Treatment: Anti-browning and colour retention
• Bakery Products: Dough conditioning and shelf-life support
• Seafood Processing: Preservation and colour maintenance
• Confectionery & Packaged Foods: Antioxidant and microbial control
• Food Processing Aid: Used where sulphite-based preservation is required

Key Features

• Powerful Preservative Action: Controls microbial activity and oxidation
• Anti-Browning Performance: Maintains natural colour in fruits and beverages
• Highly Soluble: Ensures uniform distribution in liquid and dry formulations
• Neutral Sensory Profile: Minimal impact on flavour when used correctly
• Consistent Quality: Reliable SO₂ release for predictable performance
• Shelf-Stable: Maintains quality under recommended dry storage conditions