Potassium Metabisulphite Food Grade

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Potassium Metabisulphite Food Grade is a white crystalline powder with strong antioxidant and preservative properties. It is widely used in the food and beverage industry as a disinfectant, antioxidant, and preservative to prevent spoilage and microbial growth. It also acts as a bleaching agent and sulfur dioxide (SO₂) source. This compound is critical in winemaking, brewing, and food processing to maintain product quality and extend shelf life.

Description

Potassium Metabisulphite Food Grade

Primary Uses 

  1. Food and Beverage Industry
  • Used as a preservative and antioxidant in wine, beer, fruit juices, and soft drinks to prevent oxidation and microbial contamination.
  • Acts as a sanitizer and disinfectant for equipment and surfaces in food processing facilities.
  • Employed in dried fruits and vegetables to preserve color and prevent enzymatic browning.
  • Used in baking powder as a dough conditioner and to control yeast growth.
  1. Winemaking and Brewing
  • Serves as a sterilizing agent to inhibit wild yeast and bacteria during fermentation and storage.
  • Prevents oxidation and spoilage in wine and beer production, maintaining flavor and aroma integrity.

Secondary Uses 

  1. Pharmaceuticals
  • Used as a reducing agent and preservative in certain pharmaceutical formulations.
  1. Water Treatment
  • Applied to remove excess chlorine and disinfect water in small-scale water treatment.
  1. Cosmetics
  • Utilized in low concentrations as an antioxidant and preservative in cosmetic products.
  1. Chemical Industry
  • Used as a sulfur dioxide donor in chemical synthesis and as a bleaching agent.
KEY PRODUCT FEATURES

1. Basic Identification Attributes

  • Chemical Name (IUPAC): Potassium metabisulphite
  • Common/Trade Name: Potassium Metabisulphite Food Grade
  • CAS Number: 16731-55-8
  • HS Code: 2833.29
  • Synonyms: Potassium pyrosulfite; E224; dipotassium disulfite

2. Physical & Chemical Properties

  • Physical State: White crystalline powder
  • Color & Odor: White; sulfur dioxide odor when dissolved
  • Solubility: Soluble in water, releasing SO₂ gas
  • Melting Point: Decomposes at approximately 150°C
  • Density: ~2.19 g/cm³
  • Stability: Stable when dry; releases SO₂ on contact with moisture

3. Safety & Hazard Attributes

  • GHS Classification: Harmful if swallowed; respiratory irritant; may cause allergic reactions
  • Toxicity: Moderate; avoid inhalation and ingestion
  • Exposure Limits: Follow occupational exposure limits; use respiratory protection if necessary

4. Storage & Handling Attributes

  • Storage Conditions: Store in a cool, dry, well-ventilated area, away from moisture and acids
  • Container Type: Sealed plastic or metal containers
  • Shelf Life: Typically 1–2 years if stored properly
  • Handling Precautions: Use gloves, masks, and eye protection; avoid dust inhalation

5. Regulatory & Compliance Attributes

  • Approved as a food additive (E224) by FDA, EFSA, and other regulatory bodies
  • Complies with food safety and quality standards

6. Environmental & Health Impact

  • Biodegradability: Breaks down to sulfur compounds; environmentally degradable
  • Ecotoxicity: Toxic to aquatic life at high concentrations
  • Bioaccumulation: Not significant
SAFETY HANDLING PRECAUTIONS

Safety Handling Precautions

  • PPE Required: Gloves, goggles, and dust mask recommended
  • Handling Guidelines: Avoid inhalation of dust and contact with skin or eyes
  • Storage Measures: Keep containers tightly closed and dry

First Aid Measures

  • Inhalation: Move to fresh air; seek medical attention if respiratory irritation persists
  • Skin Contact: Wash with plenty of water; seek medical help if irritation develops
  • Eye Contact: Rinse with water for at least 15 minutes; seek immediate medical attention
  • Ingestion: Rinse mouth; do not induce vomiting; seek urgent medical assistance

Firefighting Measures

  • Fire Hazards: Non-flammable but releases toxic sulfur dioxide gas when heated
  • Extinguishing Media: Use water spray, foam, or dry chemical extinguishers
  • Special Precautions: Firefighters must wear protective gear and self-contained breathing apparatus
  • Hazardous Combustion Products: Sulfur oxides (SOx)