Sodium Methabisulphite

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Sodium Metabisulphite (SMBS) is a white crystalline inorganic compound widely used as a reducing agent, antioxidant, preservative, and dechlorination chemical across industrial, water treatment, mining, food processing (food-grade only), and chemical manufacturing applications. It releases sulfur dioxide (SO₂) when dissolved in water, making it highly effective in neutralizing chlorine, oxygen scavenging, and preventing oxidation in various process systems.

Pricing: On request

Description

Product Specifications

Property Specification
Chemical Name Sodium Metabisulphite
Chemical Formula Na₂S₂O₅
CAS Number 7681-57-4
Appearance White to off-white crystalline powder
Molecular Weight 190.10 g/mol
Purity ≥ 96% (Industrial Grade)
Solubility Highly soluble in water
pH 4.0–5.5 (aqueous solution)
Density ~1.48 g/cm³
Packaging 25 kg bags or drums
Storage Store in a cool, dry, well-ventilated area in tightly sealed containers away from moisture, acids, and oxidizing agents.

Uses

Sodium Metabisulphite is widely used across multiple industries, including:

  • Dechlorination of potable water and wastewater systems.
  • Oxygen scavenger in industrial water treatment and boiler systems.
  • Mining industry for gold processing and flotation control.
  • Food and beverage preservation (food-grade only).
  • Pharmaceutical and chemical synthesis applications.
  • Textile bleaching and dyeing processes.
  • Photographic processing and film development.
  • Leather processing and tanning operations.
  • Industrial cleaning and reducing agent in chemical processes.
  • Antioxidant in various controlled manufacturing systems.

Benefits

  • Highly effective chlorine and oxygen neutralizing agent.
  • Strong reducing properties for industrial chemical processes.
  • Improves stability and shelf life of treated products (food-grade use).
  • Cost-effective solution for water treatment and dechlorination.
  • Reliable performance in mining and chemical applications.
  • Easy to dissolve and apply in aqueous systems.
  • Versatile use across multiple industrial sectors.
  • Helps prevent oxidation and corrosion in systems.
  • Supports compliance with environmental discharge requirements.
  • Widely available and trusted industrial chemical.

Safety Information

  • Releases sulfur dioxide gas when in contact with acids.
  • Wear appropriate PPE including gloves, goggles, and protective clothing.
  • Avoid inhalation of dust and fumes.
  • Use only in well-ventilated areas or with proper ventilation systems.
  • Store in tightly sealed containers away from moisture, acids, and oxidizing agents.
  • Do not mix with acids as hazardous gas may be released.
  • In case of eye contact, rinse immediately with plenty of water and seek medical attention.
  • In case of skin contact, wash thoroughly with soap and water.
  • If inhaled, move to fresh air immediately and seek medical attention if symptoms occur.
  • Always consult the latest Safety Data Sheet (SDS) before handling, storage, or transport.

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