Bleaching properties of So2

• Chemical reactions:

  • Helt NAOH → Nace + 4₂0
  • Oxidising agent reactions:
  • Son + Fe → Fes + FeO
  • HI + 5O₂ → 2I₂0 + In its → +Imm
  • 2H1† SO₂ -> 1₂ ts 24₂0 60%
• Bleaching Property of SO₂:

  • SO₂ can bleach wool, paper, flower, hair, silk, etc., in the presence of moisture to produce nascent hydrogen
  • SO₂ + H₂O → H₂S on F[H] → colouring matter + [H] → Colourless substance
  • The bleaching of SO₂ is not permanent; the substance regains its original color
• Sulfur dioxide has been shown to have antibacterial activity against certain bacteria such as Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Salmonella typhimurium, and Listeria monocytogenes.