Sulfur dioxide (SO2)

Sulfur Dioxide (SO2)

Sulfur dioxide (SO2) is available in a liquefied form, under pressure.

Unlike other manufacturers who produce SO2 using a sulfur burner, INEOS Calabrian's proprietary production process generates high purity on-purpose sulfur dioxide by the reaction of pure oxygen with sulfur. This unique closed-loop design supports a more efficient and environmentally friendly production process. Both Sites offer Rail Car and Truck Load deliveries.


  • - Cyanide Destruction Leaching- Mining, Gold and Cobalt
  • - IODINE Manufacturing
  • - Dechlorination in municipal wastewater, pulp & paper, power, and textile water treatment plants
  • - Oxygen scavenger
  • - Preservative
  • - Reducing agent
  • - Sanitizer
  • - Used in production of cleaning agents, detergents, and Surfactant production
  • - Intermediate to sulfur trioxide, oleum and sulfuric acid


Chemical Composition

Sulfur dioxide, wt% 99.9 min
Non-volatiles, ppm 50 max
H2SO4, ppm 25 max
Moisture, ppm 100 max


Physical Properties

Boiling point 14oF
Critical temperature 314.8oF
Critical pressure 77.7 atm.
Specific gravity of liquid at 32oF (water = 1) 1.43
Gas at 32o F and 1 atmosphere (air = 1) 2.26
Density of gas at 32oF and 1 atmosphere 2.92 kg/m3
Viscosity of liquid at 32oF 0.39 centipoise

Product meets FCC specifications and is also Kosher and NSF certified.



Shipped in insulated railcars and tank trucks as a liquid under pressure.

Our Other Products

Sodium Bisulfite 40% Solution
Find our full product offering for Sodium Bisulfite 40% Solution production.
Sodium Metabisulfite
Find our full product offering for Sodium Metabisulfite production.
Sodium Sulfite 15% Solution
Find our full product offering for Sodium Sulfite 15% Solution production.
Sodium Thiosulfate 30% Solution
Find our full product offering for Sodium Thiosulfate 30% Solution production.