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Sodium Metabisulfite/Sodium Pyrosulfite industrial grade for waste water
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Sodium Metabisulfite/Sodium Pyrosulfite industrial grade for waste water

Molecular formla:Na2S2O5
Molecular weight:190.09
CAS NO.:7681-57-4
EINECS NO.:231-673-0
Appearance:White or yellowish crystal powder
Odor:strong SO2 odor
Solubility:Soluble in water and acidic in aqueous solution
  • industrial grade

1.Specification:HG/T 2826-2008

Superior qualityFirst class
Main content(Na2S2O4),% ≥96.595
Iron(Fe),% ≤0.0050.01
Water-insoluble,% ≤0.050.05
Arsenic(As) ,% ≤0.0001---


  1. 1)  Printing and dyeing mordant

  2. 2)  Antichlor in after fabric bleaching

  3. 3)  Chemical and medicine reducer and sulfonating agent

  4. 4)  Bleaching agent of bamboo

  5. 5)  Wood and paper fiber

  6. 6)  Nonferrous metal dressing agent

  7. 7)  Waste water finishing agent

  8. 8)  Rubber coagulator

  9. 9)  Alkyl spice aldeheyde in spice industry

  10. 10)  Depilating agent

  11. 11)  Softening agent and anti-wear agent in leather industry

  12. 12)  Reducer of developer and protective agent of fixative in sensitization industry

3.Packing and Transport

Packing25/50/1000kg bag

Transport: should be protected from rain and sunlight.It is strictly prohibited to store and transport with acids,oxidants and harmful and toxic substances.

Storage: Should be stored in a dry,clean warehouse.The package should be sealed to prevent air oxidation.Guard against moisture.


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