Sulfur trioxide photograph

Sulfur Trioxide

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FormulaSO3
Molar mass80. 066 g/mol
Boiling point44. 9 °C
Melting point16. 9 °C
Density1. 92 g/cm³
ChemSpider ID23080
Date of Reg.
Date of Upd.
ID781351
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About Sulfur Trioxide


Sulfur trioxide is the chemical compound with the formula SO₃, with a relatively narrow liquid range. In the gaseous form, this species is a significant pollutant, being the primary agent in acid rain. It is prepared on an industrial scale as a precursor to sulfuric acid.

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