Potassium Metabisulfite

Potassium Metabisulfite (K₂S₂O₅) – CAS 16731-55-8

Key Identifiers

• Chemical Name: Potassium Metabisulfite

• Molecular Formula: K₂S₂O₅

• Molecular Weight: 222.33 g/mol

• CAS Number: 16731-55-8

• EINECS Number: 240-795-3

• Appearance: White crystalline powder or granules

• Odor: Slight sulfur dioxide smell

• Solubility: Soluble in water

  
  

Technical Specifications

Custom specifications available upon request.

Key Features & Benefits

• Powerful Antioxidant: Prevents oxidation and extends shelf life

• Antimicrobial Agent: Inhibits bacteria, yeast, and mold growth

• Efficient Preservative: Widely used in food and beverage industries

• Strong Reducing Agent: Useful in chemical synthesis and water treatment

• Cost-Effective: High performance at low dosage

  
  

Applications

1. Food & Beverage Industry

• Used as a preservative in wine, beer, and fruit juices

• Prevents browning in dried fruits and processed foods

• Acts as an antioxidant to maintain freshness

  
  

2. Water Treatment

• Dechlorination agent in municipal and industrial water systems

• Oxygen scavenger in wastewater treatment

  
  

3. Pharmaceutical Industry

• Used as an antioxidant in drug formulations

• Stabilizes active ingredients

  
  

4. Textile & Leather Industry

• Bleaching agent for textiles

• Reducing agent in dyeing processes

  
  

5. Industrial Applications

• Used in gold extraction processes

• Chemical intermediate in various synthesis reactions

  
  

Packaging & Storage

• Packaging: 25kg bags, 1000kg jumbo bags, or customized packaging

  
  

• Storage Conditions:

• Store in a cool, dry, and well-ventilated area

• Keep away from moisture and direct sunlight

• Avoid contact with acids to prevent SO₂ release

  
  

• Shelf Life: Typically 2 years under proper storage conditions

  
  

Safety & Handling

• Avoid inhalation of dust

• Use protective equipment (gloves, goggles, masks)

• In case of contact, rinse thoroughly with water

• Ensure proper ventilation during handling

  
  

Frequently Asked Questions (FAQs)

Q1: What is Potassium Metabisulfite mainly used for?
A: It is primarily used as a preservative and antioxidant in food and beverages, as well as a reducing agent in industrial processes.

Q2: Is Potassium Metabisulfite safe for food use?
A: Yes, when used within regulated limits, it is widely approved for food preservation and processing.

Q3: How does it work as a preservative?
A: It releases sulfur dioxide (SO₂), which inhibits microbial growth and prevents oxidation.

Q4: Can it be used in water treatment?
A: Yes, it is commonly used for dechlorination and oxygen scavenging in water systems.

Q5: What is the difference between Sodium Metabisulfite and Potassium Metabisulfite?
A: Both serve similar functions, but Potassium Metabisulfite is often preferred in food and beverage applications (such as winemaking) due to lower sodium content.

Why Choose Us?

• Reliable supply with consistent quality

• Competitive pricing for global markets

• Professional export experience

• Flexible packaging and customization

• Fast response and technical support

  
  

Contact Us

For quotations, samples, or technical inquiries, please contact:

Email: lisa@aozunchem.com
WeChat / WhatsApp: +86-186 5121 5887

We look forward to supporting your business with high-quality Potassium Metabisulfite (CAS 16731-55-8).