Appearance Clear liquid | ||
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Dimethyl sulfite is a sulfite ester with the chemical formula (CH3O)2SO.
Contents
Dimethyl sulfite is used as an additive in some polymers to prevent oxidation. It is also a potentially useful high energy battery electrolyte solvent.
Structure and conformation
The dimethyl sulfite molecule can adopt several conformations. The most stable is the GG conformer. Each C–O bond is gauche to the S=O bond, depicted below.
Preparation
Dimethyl sulfite is prepared from thionyl chloride and methanol.
OSCl2 + 2CH3OH → OS(OCH3)2 + 2HClReferences
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