Soluble in nitrobenzene, nitromethane, chloroform, hot acetone, liquid sulfur dioxide. Slightly soluble in dichloromethane. Insoluble in common organic solvents.
Trimethyloxonium tetrafluoroborate act as a avmethylating agent and activates C-X multiple bonds. It is involved in the esterification of polyfunctional carboxylic acids. It acts as a catalyst in the polymerization of cyclic sulfides and ethers. Further, it is used in Beckmann rearrangement of oximes.