Sodium Metabisulfite [Na2S2O5] [CAS_7681-57-4] NF/ Food and Photo Grade 97+% for Sale, White / Slightly Yellow Crystal Powder (50 Lb Bag

$ 142.50 $ 168.50

Wintersun code: 19-032ES
CAS Number: 7681-57-4
Molecular Formula: Na2S2O5
Molecular Weight: 190.1g/mol

Applications

Reducing agent for chemical manufacturing. Preservative. Auxiliary for water treatment film and photographic industry. Bleaching agent. Ensiling agent.

Sales Specification

  • Appearance: White or slightly yellow crystal powder
  • Assay (Na2S2O5): 97% Min
  • Insoluble in water: 0.03% Max
  • Arsenic: 0.002% as Max
  • Heavy Metal as Pb: 0.002% 
  • Iron: 0.003% Max
  • pH: 4.0-4.6

Packing

50 lb bag

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