Sulfur Dioxide, SO2 Industrial Gas

Sulfur dioxide (SO₂) 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.
CAS No.  7446-09-5
UN No.  1079
EINECS No.  231-195-2
Molecular weight  64.07
Appearance  colorless, pungent odor
Melting point  -75.5 ℃
Boiling point  -10 ℃
Density  2.9275 kg/m³
DOT Class  2.3 & 8
Label  Toxic Gas, Corrosives

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