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Sodium Metabisulfite, 98%

Food-grade fine crystal used as a preservative and antioxidant.
SKU: SMBS1
Qty:

Sodium Metabisulfite, 98%

Sodium metabisulfite (SMBS) is commonly used for removal of free chlorine and as a biostatic. Other chemical reducing agents exist (e.g., sulfur dioxide), but they are not as cost-effective as SMBS. When dissolved in water, sodium bisulfite (SBS) is formed from SMBS: Na2S2O5 + H2O → 2 NaHSO3, then reduces hypochlorous acid according to: 2NaHSO3 + 2HOCl → H2SO4 + 2HCl + Na2SO4. In theory, 1.34 mg of sodium metabisulfite will remove 1.0 mg of free chlorine. In practice, however, 3.0 mg of sodium metabisulfite is normally used to remove 1.0 mg of chlorine.


Product Specifications

CAS Number 7681-57-4
Chemical Formula Na2S2O5
Grade Food Grade, Fine Crystal

Applications and Benefits:

  • Preservative
  • Antioxidant
  • Bleaching agent
  • Chlorine removal
  • Biostatic agent

Caution:

Toxic by inhalation. Tolerance limit: 5 mg per cubic meter of air.

Synonyms:

Pyrosulfurous acid, disodium salt; Sodium Pyrosulfite; Disodium Salt Pyrosulfurous Acid; Sodium disulfite; Disodium disulfite; Disulfurous

  • Availability: In Stock
  • Model: SMBS1
  • Brand: ChemicalStore

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