Sulfur dioxideSulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula. It is a colorless gas with a pungent smell that is responsible for the odor of burnt matches. Read from the Chembox of the Wikipedia article Sulfur dioxide, revision 1380089687.

Property

Value

Formula

O2S, 64.06 g/mol

Melting point

-72.15 °C

Boiling point

-10 °C

Density

3 g/cm³

pKa

1.81

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