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Sodium Metabisulphite
Original price was: $ 0.99.$ 0.85Current price is: $ 0.85.
Sodium Metabisulphite is a white crystalline powder widely used as an antioxidant, disinfectant, and preservative. It dissolves readily in water, releasing sulfur dioxide, which acts as a powerful antimicrobial and antioxidant agent. This chemical finds broad applications in food processing, water treatment, pharmaceuticals, and industrial manufacturing to prevent spoilage, control microbial growth, and protect equipment from corrosion.
Sodium Metabisulphite
Primary Uses
- Food Industry
- Preservative in dried fruits, wines, and beverages to prevent oxidation and microbial spoilage.
- Dough conditioner and bleaching agent in baking.
- Water Treatment
- Removal of residual chlorine from water supplies.
- Oxygen scavenger in boiler water to reduce corrosion.
- Pharmaceuticals
- Antioxidant in pharmaceutical formulations to prolong shelf life.
- Photography
- Used as a preservative in photographic developer solutions.
- Chemical Industry
- Functions as a reducing agent in various chemical processes.
Secondary Uses
- Cosmetics
- Acts as a preservative and antioxidant in certain cosmetic formulations.
- Textile Industry
- Employed in bleaching and dyeing processes.
- Winemaking
- Used to sanitize equipment and inhibit growth of wild yeast and bacteria.
- Food Packaging
- Helps control microbial contamination to maintain product freshness.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Sodium metabisulfite
- Common/Trade Name: Sodium Metabisulphite
- CAS Number: 7681-57-4
- HS Code: 2832.30
- Synonyms: Disodium metabisulfite, Sodium pyrosulfite
2. Physical & Chemical Properties
- Physical State: Solid (powder)
- Color & Odor: White crystalline powder with sulfurous odor
- Solubility: Highly soluble in water
- Density: Approx. 1.48 g/cm³
3. Safety & Hazard Attributes
- GHS Classification: Harmful if swallowed; respiratory irritant
- Toxicity: Moderate; avoid inhalation and ingestion
- Exposure Limits: Follow safety guidelines
4. Storage & Handling Attributes
- Storage Conditions: Store in a cool, dry, ventilated area away from moisture and acids
- Container Type: Sealed plastic or paper bags with polyethylene liner
- Shelf Life: 1–2 years when stored properly
- Handling Precautions: Use gloves, dust mask, eye protection; avoid dust inhalation
5. Regulatory & Compliance Attributes
- Complies with food additive standards (FCC, E224)
- Approved by FDA and other regulatory authorities for food and industrial uses
- Meets environmental and chemical safety regulations
6. Environmental & Health Impact
- Biodegradability: Readily biodegradable
- Ecotoxicity: Harmful to aquatic organisms in high concentrations
- Bioaccumulation: Not significant
Safety Handling Precautions
- PPE Required: Gloves, goggles, dust mask, protective clothing
- Handling Guidelines: Use in well-ventilated areas; avoid contact with skin and eyes
- Storage Measures: Keep containers tightly closed and stored in a dry environment
First Aid Measures
- Inhalation: Move to fresh air; seek medical help if irritation occurs
- Skin Contact: Wash thoroughly with water; seek medical advice if irritation persists
- Eye Contact: Flush with water for at least 15 minutes; get urgent medical care
- Ingestion: Rinse mouth; do not induce vomiting; seek immediate medical attention
Firefighting Measures
- Fire Hazards: Non-flammable; emits sulfur dioxide when heated
- Extinguishing Media: Water spray, foam, dry chemical, or CO₂
- Special Precautions: Use full protective gear and self-contained breathing apparatus
- Hazardous Combustion Products: Sulfur oxides (SOx)
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