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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 (SOâ‚‚) source. This compound is critical in winemaking, brewing, and food processing to maintain product quality and extend shelf life.
Description
Primary UsesÂ
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.
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 UsesÂ
Pharmaceuticals
- Used as a reducing agent and preservative in certain pharmaceutical formulations.
Water Treatment
- Applied to remove excess chlorine and disinfect water in small-scale water treatment.
Cosmetics
- Utilized in low concentrations as an antioxidant and preservative in cosmetic products.
Chemical Industry
- Used as a sulfur dioxide donor in chemical synthesis and as a bleaching agent.
PRODUCT KEY FEATURES
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
Physical & Chemical Properties
- Physical State: White crystalline powder
- Color & Odor: White; sulfur dioxide odor when dissolved
- Solubility: Soluble in water, releasing SOâ‚‚ gas
- Melting Point: Decomposes at approximately 150°C
- Density: ~2.19 g/cm³
- Stability: Stable when dry; releases SOâ‚‚ on contact with moisture
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
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
Regulatory & Compliance Attributes
- Approved as a food additive (E224) by FDA, EFSA, and other regulatory bodies
- Complies with food safety and quality standards
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)
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