Sulfur oxide

Sulfur oxides (SOx) are a group of chemical compounds composed of sulfur and oxygen. The most common sulfur oxides are sulfur dioxide () and sulfur trioxide (). Sulfur oxides are produced naturally through volcanic activity and are also released into the atmosphere from human activities like burning fossil fuels and industrial processes.

• Lower sulfur oxides (, and )
• Sulfur monoxide () and its dimer, disulfur dioxide (S₂O₂)
• Sulfur dioxide ()
• Sulfur trioxide ()
• Higher sulfur oxides (, , and polymeric condensates of them)
• Disulfur monoxide ()