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Sodium Metabisulphite 97-100.5% BP


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Sodium Metabisulphite 97-100.5% BP

Sodium metabisulfite or sodium pyrosulfite is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to asdisodium (metabisulfite). It is used as a disinfectant, antioxidant and preservative agent.

  • Disinfectant
  • Antioxidant
  • Preservative Agent
  • Photography
  • Removal of Tree Stumps

Minimum Assay: >95% (as Na2S2O5)
Assay as SO2: >64%
Molecular Formula: Na2O5S2
Molecular Weight: 190.10
Melting Point: >300 deg C
pH (10% Sol): 4.0- 5.5
Arsenic (As): <3mg/Kg
Iron (Fe): <30mg/Kg
Mercury (Hg): <1mg/Kg
Lead (Pb): <5mg/Kg
Selenium (Se): <6mg/Kg
Heavy Metals (as Pb): <10mg/Kg

Certified Food Grade
Conforms to Commission Directive 2008/84/EC (E223)


Hazard Phrazes: Causes serious eye damage. Harmful if swallowed. Contact with acids liberates toxic gas.

Prec Phrazes: Wear protective gloves/protective clothing/eye protection/face protection.

corrosive CLP Image Harmful CLP Image

Cas No: 7681-57-4
Einecs No: 231-673-0


Sodium Metabisulphite 97-100.5% BP
Code Pack Price Qty  
GPC7107-5X 500g £2.41