Sulfur Dioxide, SO2 Industrial Gas
Product Description
is a colorless liquefied gas with a pungent odor. Dry gas is non-corrosive. Sulfur dioxide can be produced in a variety of ways, such as the combustion of sulfur or pyrite; or, as a by-product of smelter operations. It can also be prepared by the reaction of an acid with a metal sulfide, or by the direct action of sulfuric acid with a metal such as copper.
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CAS No. |
7446-09-5 |
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UN No. |
1079 |
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EINECS No. |
231-195-2 |
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Molecular weight |
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Appearance |
colorless, pungent odor |
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Melting point |
-75.5 ℃ |
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Boiling point |
-10 ℃ |
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Density |
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DOT Class |
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Label |
Toxic Gas, Corrosives |
Application:
Sulfur dioxide is used to make sulfites, bisulfites and sulfuric acid.
Other applications include: shielding gas in magnesium foundries;
As bleach; disinfection and fumigation;
As a component of ambient calibration gas; automotive exhaust monitoring;
As a refrigerant; in laboratory studies of corrosion problems; removal of excess chlorine; preparation of chrome leather tanning; and as a solvent.
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