|Appearance & Physical State:||white to yellow crystals|
|Melting Point:||208-212ºC (dec.)|
|Water Solubility:||15 g/L (20 ºC)|
|Stability:||Stable under normal temperatures and pressures.|
|Storage Condition:||Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from light.|
Trimethylsulfoxonium iodide is a sulfoxonium salt. It is used to generate dimethyloxosulfonium methylide by reaction with sodium hydride. The latter compound is used as a methylene-transfer reagent, and is used to prepare epoxides.
This compound is commercially available. It may be prepared by the reaction of dimethyl sulfoxide and iodomethane:
(CH3)2SO + CH3I → (CH3)3SO+I−