Wine Analysis Home

What Is Sulphur Dioxide (SO₂)

• Sulphur dioxide (SO₂) is a colourless, non-flammable gas with the chemical formula, SO₂ (also see sulphur and dioxide )
  
  
• The chemical abbreviation for a molecule of sulphur dioxide is SO₂
  
  
• SO₂ (sulphur dioxide), existing as single molecules , is a gas and is referred to as the molecular form of SO₂.
  
  
• In aqueous (water) solutions, such as grape juice and wine, SO₂ can exist as bound SO₂ (BSO₂) and free SO₂ (FSO₂).
  
  
• Also see - Sulphur Dioxide Topics.