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Sulfur Dioxide, SO2 Industrial Gas

CAS NO 7446-09-5
UN NO 1079
EINECS NO 231-195-2
Molecular weight 64.06
Appearance  Colorless gas
Melting point -73 °C
Boiling point -10 °C ℃
Density 1.25 g/mL at 25 °C (lit.)
DOT Class  2.3& 8
Label Toxic Gas, Corrosives


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Sulfur Dioxide is a colorless gas with room – breathing properties and special odor; With strong reducing agent、strong oxidant and flammable. Soluble in water and ethanol.


Preparation of chemicals and pharmaceuticals, preparation of bisulfite salts, such as sodium bisulfite, as paper mill bleach. Agriculture An industrial process in which corn husks are removed as soaking fluids during the wet crushing process.

For pulp and paper, preparation of sulfite cooking liquid for pulping process.

Environmental protection, urban or industrial sewage off point.

Industrial Grade

Residue≤ 0.04 %
Moisture≤ 0.06 %
Arsenic≤ 0.000004 %
Other Grades and Purity Available on Asking

Package Information

Cylinder CapacityValve
Other Packages Available on Asking